diff --git a/docs/source/more/customise.rst b/docs/source/more/customise.rst
index 8f3d2f60..7b56197a 100644
--- a/docs/source/more/customise.rst
+++ b/docs/source/more/customise.rst
@@ -59,24 +59,24 @@ A colour theme ``.conf`` file consists of the following settings:
    licenseurl  = https://creativecommons.org/licenses/by-sa/4.0/
 
    [Base]
-   default         = #303030
-   faded           = #6c6c6c
-   red             = #a62a2d
-   orange          = #b36829
-   yellow          = #a68542
-   green           = #296629
-   cyan            = #269999
-   blue            = #3a70a6
-   purple          = #b35ab3
+   default = #303030
+   faded   = #6c6c6c
+   red     = #a62a2d
+   orange  = #b36829
+   yellow  = #a68542
+   green   = #296629
+   cyan    = #269999
+   blue    = #3a70a6
+   purple  = #b35ab3
 
    [Project]
-   root            = blue
-   folder          = yellow
-   file            = default
-   title           = green
-   chapter         = red
-   scene           = blue
-   note            = yellow
+   root    = blue
+   folder  = yellow
+   file    = default
+   title   = green
+   chapter = red
+   scene   = blue
+   note    = yellow
 
    [Palette]
    window          = #efefef
@@ -95,31 +95,31 @@ A colour theme ``.conf`` file consists of the following settings:
    linkvisited     = blue
 
    [GUI]
-   helptext        = #5c5c5c
-   fadedtext       = #6c6c6c
-   errortext       = red
+   helptext  = #5c5c5c
+   fadedtext = #6c6c6c
+   errortext = red
 
    [Syntax]
-   background      = #ffffff
-   text            = #000000
-   link            = blue
-   headertext      = green
-   headertag       = green:160
-   emphasis        = orange
-   dialog          = blue
-   altdialog       = blue
-   note            = yellow
-   hidden          = faded
-   shortcode       = green
-   keyword         = red
-   tag             = green
-   value           = blue
-   optional        = green
-   spellcheckline  = red
-   errorline       = green
-   replacetag      = green
-   modifier        = green
-   texthighlight   = #c8c80060
+   background     = #ffffff
+   text           = #000000
+   link           = blue
+   headertext     = green
+   headertag      = green:L135
+   emphasis       = orange
+   dialog         = blue
+   altdialog      = blue
+   note           = yellow
+   hidden         = faded
+   shortcode      = green
+   keyword        = red
+   tag            = green
+   value          = blue
+   optional       = green
+   spellcheckline = red
+   errorline      = green
+   replacetag     = green
+   modifier       = green
+   texthighlight  = #c8c80060
 
 
 Theme Sections
@@ -149,12 +149,15 @@ There are several ways to enter colour values:
 
 .. csv-table:: Colour Formats
    :header: "Syntax", "Description"
+   :widths: 15, 85
    :class: "tight-table"
 
    "``#RRGGBB``",    "A CSS style hexadecimal values, like ``#ff0000`` for red."
    "``#RRGGBBAA``",  "A CSS style hexadecimal values with transparency, like ``#ff00007f`` for half-transparent red."
    "``name``",       "A name referring to one of the colours already specified under the ``[Base]`` section, like ``red``. Note that you should not use named colours in the ``[Base]`` section itself as that may have unintended results."
-   "``name:alpha``", "A name referring to one of the colours already specified under the ``[Base]`` section, with a transparency value added. The alpha value must be in the range ``0`` to ``255``, like ``red:127`` for half-transparent red."
+   "``name:255``",   "A name referring to one of the colours already specified under the ``[Base]`` section, with a transparency value added. The value must be in the range ``0`` to ``255``, like ``red:127`` for half-transparent red."
+   "``name:L100``",  "A name referring to one of the colours already specified under the ``[Base]`` section, where the L-number is a percentage value that makes it lighter. The value must be greater than ``0``. ``L100`` means no change."
+   "``name:D100``",  "A name referring to one of the colours already specified under the ``[Base]`` section, where the D-number is a percentage value that makes it darker. The value must be greater than ``0``. ``D100`` means no change."
    "``r, g, b``",    "A set of red, green and blue numbers in the range ``0`` to ``255``, like ``255, 0, 0`` for red."
    "``r, g, b, a``", "A set of red, green, blue and alpha numbers in the range ``0`` to ``255``, like ``255, 0, 0, 127`` for half-transparent red."
 
diff --git a/novelwriter/assets/images/welcome-dark.jpg b/novelwriter/assets/images/welcome-dark.jpg
deleted file mode 100644
index 1b434912..00000000
Binary files a/novelwriter/assets/images/welcome-dark.jpg and /dev/null differ
diff --git a/novelwriter/assets/images/welcome-light.jpg b/novelwriter/assets/images/welcome-light.jpg
deleted file mode 100644
index 1a1b9f6a..00000000
Binary files a/novelwriter/assets/images/welcome-light.jpg and /dev/null differ
diff --git a/novelwriter/assets/images/welcome.webp b/novelwriter/assets/images/welcome.webp
new file mode 100644
index 00000000..3831aafe
Binary files /dev/null and b/novelwriter/assets/images/welcome.webp differ
diff --git a/novelwriter/assets/themes/default_dark.conf b/novelwriter/assets/themes/default_dark.conf
index e2e41efb..267fbcb0 100644
--- a/novelwriter/assets/themes/default_dark.conf
+++ b/novelwriter/assets/themes/default_dark.conf
@@ -54,7 +54,7 @@ background     = #363636
 text           = default
 link           = blue
 headertext     = green
-headertag      = green:160
+headertag      = green:D150
 emphasis       = orange
 dialog         = blue
 altdialog      = blue
diff --git a/novelwriter/assets/themes/default_light.conf b/novelwriter/assets/themes/default_light.conf
index ad38e0e7..e08de69f 100644
--- a/novelwriter/assets/themes/default_light.conf
+++ b/novelwriter/assets/themes/default_light.conf
@@ -54,7 +54,7 @@ background     = #ffffff
 text           = #000000
 link           = blue
 headertext     = green
-headertag      = green:160
+headertag      = green:L135
 emphasis       = orange
 dialog         = blue
 altdialog      = blue
diff --git a/novelwriter/assets/themes/dracula.conf b/novelwriter/assets/themes/dracula.conf
index 0d5dd373..ed1f1e92 100644
--- a/novelwriter/assets/themes/dracula.conf
+++ b/novelwriter/assets/themes/dracula.conf
@@ -70,7 +70,7 @@ background     = #282a36
 text           = #f8f8f2
 link           = #ff79c6
 headertext     = purple
-headertag      = #bd93f9a0
+headertag      = purple:D150
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
@@ -85,4 +85,4 @@ spellcheckline = red
 errorline      = green
 replacetag     = yellow
 modifier       = cyan
-texthighlight  = #f1fa8c60
+texthighlight  = yellow:96
diff --git a/novelwriter/assets/themes/grey_dark.conf b/novelwriter/assets/themes/grey_dark.conf
index c51879a3..de9a1f35 100644
--- a/novelwriter/assets/themes/grey_dark.conf
+++ b/novelwriter/assets/themes/grey_dark.conf
@@ -8,7 +8,7 @@ license    = CC BY-SA 4.0
 licenseurl = https://creativecommons.org/licenses/by-sa/4.0/
 
 [Base]
-default = #cccccc
+default = #c8c8c8
 faded   = #949494
 red     = #f2777a
 orange  = #f99139
@@ -44,28 +44,28 @@ link            = blue
 linkvisited     = blue
 
 [GUI]
-helptext  = #a4a4a4
+helptext  = default:D120
 fadedtext = faded
 errortext = red
 
 [Syntax]
 background     = #363636
-text           = #c8c8c8
-link           = #c8c8c8
-headertext     = #e1e1e1
-headertag      = #e1e1e1a0
-emphasis       = #c8c8c8
-dialog         = #c8c8c8
-altdialog      = #c8c8c8
-note           = #c8c8c8
+text           = default
+link           = default
+headertext     = default:L115
+headertag      = default:D125
+emphasis       = default
+dialog         = default
+altdialog      = default
+note           = default
 hidden         = faded
-shortcode      = #e1e1e1
-keyword        = #e1e1e1
-tag            = #c8c8c8
-value          = #c8c8c8
-optional       = #e1e1e1
+shortcode      = default:L115
+keyword        = default:L115
+tag            = default
+value          = default
+optional       = default:L115
 spellcheckline = red
 errorline      = green
-replacetag     = #e1e1e1
-modifier       = #e1e1e1
+replacetag     = default:L115
+modifier       = default:L115
 texthighlight  = #ffffff40
diff --git a/novelwriter/assets/themes/grey_light.conf b/novelwriter/assets/themes/grey_light.conf
index 3bd22238..ace40f8c 100644
--- a/novelwriter/assets/themes/grey_light.conf
+++ b/novelwriter/assets/themes/grey_light.conf
@@ -8,7 +8,7 @@ license    = CC BY-SA 4.0
 licenseurl = https://creativecommons.org/licenses/by-sa/4.0/
 
 [Base]
-default = #303030
+default = #282828
 faded   = #6c6c6c
 red     = #a62a2d
 orange  = #b36829
@@ -44,28 +44,28 @@ link            = blue
 linkvisited     = blue
 
 [GUI]
-helptext  = #5c5c5c
+helptext  = default:L225
 fadedtext = faded
 errortext = red
 
 [Syntax]
 background     = #ffffff
-text           = #141414
-link           = #141414
-headertext     = #000000
-headertag      = #000000a0
-emphasis       = #141414
-dialog         = #141414
-altdialog      = #141414
-note           = #141414
+text           = default
+link           = default
+headertext     = default:D200
+headertag      = default:L400
+emphasis       = default
+dialog         = default
+altdialog      = default
+note           = default
 hidden         = faded
-shortcode      = #000000
-keyword        = #000000
-tag            = #141414
-value          = #141414
-optional       = #000000
+shortcode      = default:D200
+keyword        = default:D200
+tag            = default
+value          = default
+optional       = default:D200
 spellcheckline = red
 errorline      = green
-replacetag     = #000000
-modifier       = #000000
+replacetag     = default:D200
+modifier       = default:D200
 texthighlight  = #00000040
diff --git a/novelwriter/assets/themes/light_owl.conf b/novelwriter/assets/themes/light_owl.conf
index 8851b0d2..512f4019 100644
--- a/novelwriter/assets/themes/light_owl.conf
+++ b/novelwriter/assets/themes/light_owl.conf
@@ -77,7 +77,7 @@ headertag      = blue:160
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
-note           = #80764b
+note           = yellow:D175
 hidden         = faded
 shortcode      = blue
 keyword        = red
diff --git a/novelwriter/assets/themes/night_owl.conf b/novelwriter/assets/themes/night_owl.conf
index 3e0a5aca..2fbf7d60 100644
--- a/novelwriter/assets/themes/night_owl.conf
+++ b/novelwriter/assets/themes/night_owl.conf
@@ -32,7 +32,7 @@ default = #d6deeb
 faded   = #637777
 red     = #f78c6c
 orange  = #ecc48d
-yellow  = #addb67
+yellow  = #ffeb95
 green   = #addb67
 cyan    = #7fdbca
 blue    = #82aaff
@@ -77,7 +77,7 @@ headertag      = blue:160
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
-note           = #fff9ca
+note           = yellow:L115
 hidden         = faded
 shortcode      = blue
 keyword        = red
diff --git a/novelwriter/assets/themes/snazzy.conf b/novelwriter/assets/themes/snazzy.conf
index 737107e7..f2fa7785 100644
--- a/novelwriter/assets/themes/snazzy.conf
+++ b/novelwriter/assets/themes/snazzy.conf
@@ -66,12 +66,12 @@ background     = #fafbfc
 text           = default
 link           = blue
 headertext     = green
-headertag      = #2dae58a0
+headertag      = green:D125
 emphasis       = purple
 dialog         = blue
 altdialog      = yellow
-note           = #78bbb9
-hidden         = #9194a2
+note           = cyan
+hidden         = purple:D150
 shortcode      = purple
 keyword        = blue
 tag            = green
@@ -81,4 +81,4 @@ spellcheckline = red
 errorline      = green
 replacetag     = cyan
 modifier       = purple
-texthighlight  = #cf9c0060
+texthighlight  = yellow:96
diff --git a/novelwriter/assets/themes/solarized_dark.conf b/novelwriter/assets/themes/solarized_dark.conf
index 495d68eb..8b07003a 100644
--- a/novelwriter/assets/themes/solarized_dark.conf
+++ b/novelwriter/assets/themes/solarized_dark.conf
@@ -58,12 +58,12 @@ button          = #073642
 buttontext      = default
 brighttext      = #073642
 highlight       = cyan
-highlightedtext = #002b36
+highlightedtext = default
 link            = blue
 linkvisited     = blue
 
 [GUI]
-helptext  = purple
+helptext  = cyan
 fadedtext = faded
 errortext = red
 
@@ -71,18 +71,18 @@ errortext = red
 background     = #073642
 text           = default
 link           = blue
-headertext     = default:196
+headertext     = default:D125
 headertag      = cyan
 emphasis       = blue
 dialog         = cyan
 altdialog      = cyan
-note           = cyan:196
-hidden         = default:196
+note           = cyan:L115
+hidden         = default:D150
 shortcode      = yellow
 keyword        = green
 tag            = orange
 value          = orange
-optional       = cyan:196
+optional       = cyan:L115
 spellcheckline = orange
 errorline      = red
 replacetag     = green
diff --git a/novelwriter/assets/themes/solarized_light.conf b/novelwriter/assets/themes/solarized_light.conf
index bfdcdad1..22b165b9 100644
--- a/novelwriter/assets/themes/solarized_light.conf
+++ b/novelwriter/assets/themes/solarized_light.conf
@@ -59,12 +59,12 @@ button          = #eee8d5
 buttontext      = default
 brighttext      = #eee8d5
 highlight       = cyan
-highlightedtext = #fdf6e3
+highlightedtext = default
 link            = blue
 linkvisited     = blue
 
 [GUI]
-helptext  = purple
+helptext  = cyan
 fadedtext = faded
 errortext = red
 
@@ -72,18 +72,18 @@ errortext = red
 background     = #eee8d5
 text           = default
 link           = blue
-headertext     = default:196
+headertext     = default:L125
 headertag      = cyan
 emphasis       = blue
 dialog         = cyan
 altdialog      = cyan
-note           = cyan:196
-hidden         = default:196
+note           = cyan:D125
+hidden         = default:L200
 shortcode      = yellow
 keyword        = green
 tag            = orange
 value          = orange
-optional       = cyan:196
+optional       = cyan:D125
 spellcheckline = orange
 errorline      = red
 replacetag     = green
diff --git a/novelwriter/assets/themes/tango_dark.conf b/novelwriter/assets/themes/tango_dark.conf
index dd0b9746..252bce4d 100644
--- a/novelwriter/assets/themes/tango_dark.conf
+++ b/novelwriter/assets/themes/tango_dark.conf
@@ -41,20 +41,20 @@ note    = yellow
 window          = #555753
 windowtext      = default
 base            = #2e3436
-alternatebase   = #888a85
+alternatebase   = #454e51
 text            = default
 tooltipbase     = #ffffc0
 tooltiptext     = #15150d
 button          = #555753
 buttontext      = default
 brighttext      = #555753
-highlight       = #2c98f7
+highlight       = blue
 highlightedtext = #ffffff
 link            = blue
 linkvisited     = blue
 
 [GUI]
-helptext  = #e9b96e
+helptext  = orange
 fadedtext = faded
 errortext = red
 
@@ -67,7 +67,7 @@ headertag      = blue:160
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
-note           = #fcf2a4
+note           = yellow:L115
 hidden         = faded
 shortcode      = blue
 keyword        = red
diff --git a/novelwriter/assets/themes/tango_light.conf b/novelwriter/assets/themes/tango_light.conf
index 047be605..c702de8d 100644
--- a/novelwriter/assets/themes/tango_light.conf
+++ b/novelwriter/assets/themes/tango_light.conf
@@ -48,13 +48,13 @@ tooltiptext     = #15150d
 button          = #d3d7cf
 buttontext      = default
 brighttext      = #d3d7cf
-highlight       = #3087c6
+highlight       = blue:L200
 highlightedtext = #ffffff
 link            = blue
 linkvisited     = blue
 
 [GUI]
-helptext  = #8f5902
+helptext  = orange
 fadedtext = faded
 errortext = red
 
@@ -67,7 +67,7 @@ headertag      = blue:160
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
-note           = #a78800
+note           = yellow:D125
 hidden         = faded
 shortcode      = blue
 keyword        = red
diff --git a/novelwriter/assets/themes/tomorrow.conf b/novelwriter/assets/themes/tomorrow.conf
index b37ab4be..2736fdae 100644
--- a/novelwriter/assets/themes/tomorrow.conf
+++ b/novelwriter/assets/themes/tomorrow.conf
@@ -73,7 +73,7 @@ background     = #ffffff
 text           = #4d4d4c
 link           = blue
 headertext     = blue
-headertag      = blue:160
+headertag      = blue:L135
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
diff --git a/novelwriter/assets/themes/tomorrow_night.conf b/novelwriter/assets/themes/tomorrow_night.conf
index ea94cdec..c266b31d 100644
--- a/novelwriter/assets/themes/tomorrow_night.conf
+++ b/novelwriter/assets/themes/tomorrow_night.conf
@@ -73,7 +73,7 @@ background     = #1d1f21
 text           = default
 link           = blue
 headertext     = blue
-headertag      = blue:160
+headertag      = blue:D150
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
diff --git a/novelwriter/assets/themes/tomorrow_night_blue.conf b/novelwriter/assets/themes/tomorrow_night_blue.conf
index 8ac01e1e..f96448af 100644
--- a/novelwriter/assets/themes/tomorrow_night_blue.conf
+++ b/novelwriter/assets/themes/tomorrow_night_blue.conf
@@ -73,7 +73,7 @@ background     = #002451
 text           = default
 link           = blue
 headertext     = blue
-headertag      = blue:160
+headertag      = blue:D150
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
diff --git a/novelwriter/assets/themes/tomorrow_night_bright.conf b/novelwriter/assets/themes/tomorrow_night_bright.conf
index 4a0bbd9c..82cac1d0 100644
--- a/novelwriter/assets/themes/tomorrow_night_bright.conf
+++ b/novelwriter/assets/themes/tomorrow_night_bright.conf
@@ -73,7 +73,7 @@ background     = #000000
 text           = default
 link           = blue
 headertext     = blue
-headertag      = blue:160
+headertag      = blue:D150
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
diff --git a/novelwriter/assets/themes/tomorrow_night_eighties.conf b/novelwriter/assets/themes/tomorrow_night_eighties.conf
index 8f9850fa..e14b0dac 100644
--- a/novelwriter/assets/themes/tomorrow_night_eighties.conf
+++ b/novelwriter/assets/themes/tomorrow_night_eighties.conf
@@ -73,7 +73,7 @@ background     = #2d2d2d
 text           = default
 link           = blue
 headertext     = blue
-headertag      = blue:160
+headertag      = blue:D150
 emphasis       = orange
 dialog         = green
 altdialog      = yellow
diff --git a/novelwriter/gui/theme.py b/novelwriter/gui/theme.py
index 4ab4f7d8..89d3fecd 100644
--- a/novelwriter/gui/theme.py
+++ b/novelwriter/gui/theme.py
@@ -244,32 +244,6 @@ class GuiTheme:
         window = palette.window().color()
         return text.lightnessF() > window.lightnessF()
 
-    def parseColor(self, value: str, default: QColor = QtBlack) -> QColor:
-        """Parse a string as a colour value."""
-        if value in self._qColors:
-            # Named colour
-            return self._qColors[value]
-        elif value.startswith("#") and len(value) == 7:
-            # Assume #RRGGBB
-            return QColor.fromString(value)
-        elif value.startswith("#") and len(value) == 9:
-            # Assume #RRGGBBAA and convert to #AARRGGBB
-            return QColor.fromString(f"#{value[7:9]}{value[1:7]}")
-        elif ":" in value:
-            # Colour name and alpha
-            name, _, alpha = value.partition(":")
-            color = QColor(self._qColors.get(name.strip(), default))
-            color.setAlpha(checkInt(alpha, 255))
-            return color
-        elif "," in value:
-            # Integer red, green, blue, alpha
-            data = value.split(",")
-            result = [0, 0, 0, 255]
-            for i in range(min(len(data), 4)):
-                result[i] = checkInt(data[i].strip(), result[i])
-            return QColor(*result)
-        return default
-
     def loadTheme(self, force: bool = False) -> bool:
         """Load the currently specified GUI theme. The boolean return
         can be used to determine if the GUI needs refreshing.
@@ -489,6 +463,37 @@ class GuiTheme:
     #  Internal Functions
     ##
 
+    def _parseColor(self, value: str, default: QColor = QtBlack) -> QColor:
+        """Parse a string as a colour value."""
+        if value in self._qColors:
+            # Named colour
+            return self._qColors[value]
+        elif value.startswith("#") and len(value) == 7:
+            # Assume #RRGGBB
+            return QColor.fromString(value)
+        elif value.startswith("#") and len(value) == 9:
+            # Assume #RRGGBBAA and convert to #AARRGGBB
+            return QColor.fromString(f"#{value[7:9]}{value[1:7]}")
+        elif ":" in value:
+            # Colour name and alpha
+            name, _, adjust = value.partition(":")
+            color = QColor(self._qColors.get(name.strip(), default))
+            if adjust.startswith("L"):
+                color = color.lighter(checkInt(adjust[1:], 100))
+            elif adjust.startswith("D"):
+                color = color.darker(checkInt(adjust[1:], 100))
+            else:
+                color.setAlpha(checkInt(adjust, 255))
+            return color
+        elif "," in value:
+            # Integer red, green, blue, alpha
+            data = value.split(",")
+            result = [0, 0, 0, 255]
+            for i in range(min(len(data), 4)):
+                result[i] = checkInt(data[i].strip(), result[i])
+            return QColor(*result)
+        return default
+
     def _setBaseColor(self, key: str, color: QColor) -> None:
         """Set the colour for a named colour."""
         self._qColors[key] = QColor(color)
@@ -544,7 +549,7 @@ class GuiTheme:
 
     def _readColor(self, parser: ConfigParser, section: str, name: str) -> QColor:
         """Parse a colour value from a config string."""
-        return self.parseColor(parser.get(section, name, fallback="default"))
+        return self._parseColor(parser.get(section, name, fallback="default"))
 
     def _setPalette(
         self, parser: ConfigParser, section: str, name: str, value: QPalette.ColorRole
@@ -634,7 +639,7 @@ class GuiIcons:
         "unfold": ("unfold-show", "unfold-hide"),
     }
     IMAGE_MAP: Final[dict[str, tuple[str, str]]] = {
-        "welcome":  ("welcome-light.jpg", "welcome-dark.jpg"),
+        "welcome":  ("welcome.webp", "welcome.webp"),
         "nw-text":  ("novelwriter-text-light.svg", "novelwriter-text-dark.svg"),
     }
 
diff --git a/novelwriter/tools/welcome.py b/novelwriter/tools/welcome.py
index 9b0abe33..9c3f5776 100644
--- a/novelwriter/tools/welcome.py
+++ b/novelwriter/tools/welcome.py
@@ -32,7 +32,7 @@ from PyQt6.QtCore import (
     QAbstractListModel, QModelIndex, QObject, QPoint, QSize, Qt, pyqtSignal,
     pyqtSlot
 )
-from PyQt6.QtGui import QAction, QCloseEvent, QColor, QFont, QPainter, QPaintEvent, QPen, QShortcut
+from PyQt6.QtGui import QAction, QCloseEvent, QFont, QPainter, QPaintEvent, QPen, QShortcut
 from PyQt6.QtWidgets import (
     QApplication, QFileDialog, QFormLayout, QHBoxLayout, QLabel, QLineEdit,
     QListView, QMenu, QPushButton, QScrollArea, QStackedWidget,
@@ -77,7 +77,6 @@ class GuiWelcome(NDialog):
 
         self.bgImage = SHARED.theme.getDecoration("welcome")
         self.nwImage = SHARED.theme.getDecoration("nw-text", h=36)
-        self.bgColor = QColor(54, 54, 54) if SHARED.theme.isDarkTheme else QColor(255, 255, 255)
 
         self.nwLogo = QLabel(self)
         self.nwLogo.setPixmap(SHARED.theme.getPixmap("novelwriter", (128, 128)))
@@ -178,8 +177,8 @@ class GuiWelcome(NDialog):
         hPix = min(hWin, 600)
         tMode = Qt.TransformationMode.SmoothTransformation
         painter = QPainter(self)
-        painter.fillRect(self.rect(), self.bgColor)
         painter.drawPixmap(0, hWin - hPix, self.bgImage.scaledToHeight(hPix, tMode))
+        painter.end()
         super().paintEvent(event)
         return
 
diff --git a/tests/test_gui/test_gui_theme.py b/tests/test_gui/test_gui_theme.py
index d14304d1..4c834d38 100644
--- a/tests/test_gui/test_gui_theme.py
+++ b/tests/test_gui/test_gui_theme.py
@@ -52,29 +52,40 @@ def testGuiTheme_ParseColor():
     theme._qColors["red"] = QColor(255, 0, 0)
     theme._qColors["green"] = QColor(0, 255, 0)
     theme._qColors["blue"] = QColor(0, 0, 255)
+    theme._qColors["grey"] = QColor(127, 127, 127)
 
     # By Name
-    assert theme.parseColor("red").getRgb() == (255, 0, 0, 255)
-    assert theme.parseColor("green").getRgb() == (0, 255, 0, 255)
-    assert theme.parseColor("blue").getRgb() == (0, 0, 255, 255)
-    assert theme.parseColor("bob").getRgb() == (0, 0, 0, 255)
+    assert theme._parseColor("red").getRgb() == (255, 0, 0, 255)
+    assert theme._parseColor("green").getRgb() == (0, 255, 0, 255)
+    assert theme._parseColor("blue").getRgb() == (0, 0, 255, 255)
+    assert theme._parseColor("bob").getRgb() == (0, 0, 0, 255)
 
     # CSS Format
-    assert theme.parseColor("#ff0000").getRgb() == (255, 0, 0, 255)
-    assert theme.parseColor("#ff00007f").getRgb() == (255, 0, 0, 127)
-    assert theme.parseColor("#ff00").getRgb() == (0, 0, 0, 255)  # Too short -> ignored
-    assert theme.parseColor("#ff00007f15").getRgb() == (0, 0, 0, 255)  # Too long -> ignored
+    assert theme._parseColor("#ff0000").getRgb() == (255, 0, 0, 255)
+    assert theme._parseColor("#ff00007f").getRgb() == (255, 0, 0, 127)
+    assert theme._parseColor("#ff00").getRgb() == (0, 0, 0, 255)  # Too short -> ignored
+    assert theme._parseColor("#ff00007f15").getRgb() == (0, 0, 0, 255)  # Too long -> ignored
 
     # Name + Alpha
-    assert theme.parseColor("red:255").getRgb() == (255, 0, 0, 255)
-    assert theme.parseColor("red:127").getRgb() == (255, 0, 0, 127)
-    assert theme.parseColor("red:512").getRgb() == (255, 0, 0, 255)  # Value truncated
+    assert theme._parseColor("red:255").getRgb() == (255, 0, 0, 255)
+    assert theme._parseColor("red:127").getRgb() == (255, 0, 0, 127)
+    assert theme._parseColor("red:512").getRgb() == (255, 0, 0, 255)  # Value truncated
+
+    # Name + Lighter
+    assert theme._parseColor("grey:L100").getRgb() == (127, 127, 127, 255)
+    assert theme._parseColor("grey:L150").getRgb() == (190, 190, 190, 255)
+    assert theme._parseColor("grey:L50").getRgb() == (63, 63, 63, 255)
+
+    # Name + Darker
+    assert theme._parseColor("grey:D100").getRgb() == (127, 127, 127, 255)
+    assert theme._parseColor("grey:D150").getRgb() == (85, 85, 85, 255)
+    assert theme._parseColor("grey:D50").getRgb() == (254, 254, 254, 255)
 
     # Values
-    assert theme.parseColor("255, 0, 0").getRgb() == (255, 0, 0, 255)
-    assert theme.parseColor("255, 0, 0, 255").getRgb() == (255, 0, 0, 255)
-    assert theme.parseColor("255, 0, 0, 127").getRgb() == (255, 0, 0, 127)
-    assert theme.parseColor("255, 0, 0, 127, 42").getRgb() == (255, 0, 0, 127)  # Truncated
+    assert theme._parseColor("255, 0, 0").getRgb() == (255, 0, 0, 255)
+    assert theme._parseColor("255, 0, 0, 255").getRgb() == (255, 0, 0, 255)
+    assert theme._parseColor("255, 0, 0, 127").getRgb() == (255, 0, 0, 127)
+    assert theme._parseColor("255, 0, 0, 127, 42").getRgb() == (255, 0, 0, 127)  # Truncated
 
 
 @pytest.mark.gui