Skip to content

Instantly share code, notes, and snippets.

@adil192

adil192/Setup Fedora COSMIC to use Plasma Breeze theme for QT apps.md

Last active February 2, 2026 02:23
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save adil192/61cd9c58a8bd0955cff9f1f7c52cb572 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save adil192/61cd9c58a8bd0955cff9f1f7c52cb572 to your computer and use it in GitHub Desktop.
Download ZIP
Setup Fedora COSMIC to use Plasma Breeze theme for QT apps
Raw
Setup Fedora COSMIC to use Plasma Breeze theme for QT apps.md

These are very rough instructions so I don't forget what worked...

  1. Install the breeze theme and config programs: 
    sudo dnf install plasma-breeze qt5ct qt6ct
  2. Add export QT_QPA_PLATFORMTHEME=qt6ct into your ~/.bashrc file
  3. Copy BreezeDark into a kdeglobals file. Otherwise some programs (like Prism Launcher) default to BreezeLight. 
    cp /usr/share/color-schemes/BreezeDark.colors ~/.config/kdeglobals
  4. Open qt5ct and set:
    • Style: Breeze
    • Color scheme: Style's colors      (inherits colors from kdeglobals)
    • Standard dialogs: XDG Desktop Portal      (to use COSMIC's file picker)
    • Fonts: Adwaita Sans 10 and Adwaita Mono 10      (the fonts from GNOME, subjective)
    • fonts.conf: Antialiasing, Hinting, Hinting style slight      (this looks best for me)
    • Icon Theme: Breeze Dark
  5. Open qt6ct and do the same as above.
  6. For Flatpak apps like Prism Launcher, run this: 
    flatpak override --user \
     --filesystem=xdg-config/qt5ct:ro \
     --filesystem=xdg-config/qt6ct:ro \
     --filesystem=xdg-config/kdeglobals:ro \
     --env=QT_QPA_PLATFORMTHEME=qt6ct
    Then in Prism Launcher, go to Settings > Appearance > Theme: Breeze
  7. Reboot or logout+login for changes to take effect.

You can edit the color schemes in kdeglobals. I made mine green to match my COSMIC theme, attached below.

image
Raw
~_.config_kdeglobals
[ColorEffects:Disabled]
Color=55,57,55
ColorAmount=0
ColorEffect=0
ContrastAmount=0.65
ContrastEffect=1
IntensityAmount=0.1
IntensityEffect=2
[ColorEffects:Inactive]
ChangeSelectionColor=true
Color=112,111,110
ColorAmount=0.025
ColorEffect=2
ContrastAmount=0.1
ContrastEffect=2
Enable=false
IntensityAmount=0
IntensityEffect=0
[Colors:Button]
BackgroundAlternate=30,116,87
BackgroundNormal=44,52,45
DecorationFocus=25,70,25
DecorationHover=25,70,25
ForegroundActive=25,70,25
ForegroundInactive=161,177,169
ForegroundLink=29,243,153
ForegroundNegative=218,68,83
ForegroundNeutral=246,116,0
ForegroundNormal=252,252,252
ForegroundPositive=39,174,96
ForegroundVisited=155,89,182
[Colors:Complementary]
BackgroundAlternate=30,116,87
BackgroundNormal=32,38,34
DecorationFocus=25,70,25
DecorationHover=25,70,25
ForegroundActive=25,70,25
ForegroundInactive=161,177,169
ForegroundLink=29,243,153
ForegroundNegative=218,68,83
ForegroundNeutral=246,116,0
ForegroundNormal=252,252,252
ForegroundPositive=39,174,96
ForegroundVisited=155,89,182
[Colors:Header]
BackgroundAlternate=32,38,34
BackgroundNormal=6,17,7
DecorationFocus=25,70,25
DecorationHover=25,70,25
ForegroundActive=25,70,25
ForegroundInactive=161,177,169
ForegroundLink=29,243,153
ForegroundNegative=218,68,83
ForegroundNeutral=246,116,0
ForegroundNormal=252,252,252
ForegroundPositive=39,174,96
ForegroundVisited=155,89,182
[Colors:Header][Inactive]
BackgroundAlternate=6,17,7
BackgroundNormal=6,17,7
DecorationFocus=25,70,25
DecorationHover=25,70,25
ForegroundActive=25,70,25
ForegroundInactive=161,177,169
ForegroundLink=29,243,153
ForegroundNegative=218,68,83
ForegroundNeutral=246,116,0
ForegroundNormal=252,252,252
ForegroundPositive=39,174,96
ForegroundVisited=155,89,182
[Colors:Selection]
BackgroundAlternate=30,87,116
BackgroundNormal=25,70,25
DecorationFocus=25,70,25
DecorationHover=25,70,25
ForegroundActive=252,252,252
ForegroundInactive=161,177,169
ForegroundLink=253,188,75
ForegroundNegative=176,55,69
ForegroundNeutral=198,92,0
ForegroundNormal=251,253,251
ForegroundPositive=23,104,57
ForegroundVisited=155,89,182
[Colors:Tooltip]
BackgroundAlternate=32,38,34
BackgroundNormal=6,17,7
DecorationFocus=25,70,25
DecorationHover=25,70,25
ForegroundActive=25,70,25
ForegroundInactive=161,177,169
ForegroundLink=29,243,153
ForegroundNegative=218,68,83
ForegroundNeutral=246,116,0
ForegroundNormal=252,252,252
ForegroundPositive=39,174,96
ForegroundVisited=155,89,182
[Colors:View]
BackgroundAlternate=29,34,31
BackgroundNormal=20,24,21
DecorationFocus=25,70,25
DecorationHover=25,70,25
ForegroundActive=25,70,25
ForegroundInactive=161,177,169
ForegroundLink=29,243,153
ForegroundNegative=218,68,83
ForegroundNeutral=246,116,0
ForegroundNormal=252,252,252
ForegroundPositive=39,174,96
ForegroundVisited=155,89,182
[Colors:Window]
BackgroundAlternate=41,48,42
BackgroundNormal=6,17,7
DecorationFocus=25,70,25
DecorationHover=25,70,25
ForegroundActive=25,70,25
ForegroundInactive=161,177,169
ForegroundLink=29,243,153
ForegroundNegative=218,68,83
ForegroundNeutral=246,116,0
ForegroundNormal=252,252,252
ForegroundPositive=39,174,96
ForegroundVisited=155,89,182
[General]
ColorScheme=BreezeDark
Name=Breeze Dark
shadeSortColumn=true
[KDE]
contrast=4
[WM]
activeBackground=6,17,7
activeBlend=251,253,251
activeForeground=252,252,252
inactiveBackground=32,36,40
inactiveBlend=161,177,169
inactiveForeground=161,177,169
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment