How to change GTK2 themes on KDE plasma5.20?

I am a new user of Manjaro KDE plasma.I updated the system and the then installed apps.Then I changed my theme colors to dark but some apps like firefox , pamac , evolution,etc. did not sync up with the theme . I googled about it and I came to know that plasma 5.20 dropped support for changing themes.

Someone please help me to solve this.



Thanks @Tomek

It worked for pamac and evolution but firefox , chromium and vivaldi haven’t changed.

Vivaldi doesn’t support system theming. Only way is Vivaldi settings.

They use their own theming, because they’re locked-down. You have to use themes from their respective app store.

Thank you so much @Aragorn It helped.
One more thing how to close this thread ?

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You don’t need to. The forum engine will automatically close it in two weeks. :wink:

Plasma doesnt touch the ~/.gtkrc-2.0 file anymore.

I will leave here mine so you can use it to create or edit your own:


# File created by KDE Gtk Config # This is a lie now ;-)
# Configs for GTK2 programs 

gtk-font-name="Noto Sans,  10"

(this may or may not apply to your other examples … but its the fix for gtk2 theming, like gcolor2)


good afternoon,

is there a way to update the highlight colors to match the kde apps? i have tried systm settings-> app style -> configure gnome/gtk app style -> and it updates the window settings but not the highlight colors.

pretty much all gtk apps (mozilla, etc…) still highlight in green and different than kde.

not a major issue but not eye-pleasing.

any way to fix this?

If its gtk3 it should pick up your system colors fine
(System Settings > Appearance > Colors)
For gtk2 it will be tied to your gtk theme … see the post right above yours.

did not work unfortunately.

the behaviour is also reproduced on my laptop.

here is my system:

███████████████  ████████   OS: Manjaro Linux x86_64 
██████████████████  ████████   Host: HP Z440 Workstation 
████████            ████████   Kernel: 5.9.11-2-MANJARO 
████████  ████████  ████████   Uptime: 1 day, 10 hours, 9 mins 
████████  ████████  ████████   Packages: 1367 (pacman) 
████████  ████████  ████████   Shell: bash 5.0.18 
████████  ████████  ████████   Resolution: 1920x1080, 1920x1080 
████████  ████████  ████████   DE: Plasma 5.20.3 
████████  ████████  ████████   WM: KWin 
████████  ████████  ████████   WM Theme: Oxygen 
████████  ████████  ████████   Theme: Aritim-Light [Plasma], Aritim-Light-GTK [GTK 
████████  ████████  ████████   Icons: oxygen [Plasma], oxygen [GTK2/3] 
                               Terminal: konsole 
                               Terminal Font: Lucida Console 10 
                               CPU: Intel Xeon E5-1620 v3 (8) @ 3.600GHz 
                               GPU: NVIDIA Quadro K2200 
                               Memory: 7887MiB / 32032MiB 

Did you try closing and reopening Firefox? I just did the following test to be sure (I’m using Breath2 colors by default).

  1. Open Firefox, highlight text in address bar. It’s green. Good.
  2. Close Firefox.
  3. Open “Colors” setting, change to Breeze.
  4. Open Firefox, highlight text in address bar. It’s blue. Good.

i did and it worked on both laptop and desktop. thanks kindly for your help!

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hello all. one question relative to this:

Is there a way I can change the icons in a GTK application outside of the application?

My specific problem is that I changed GTK theme to a dark one, and now some icons that are “dark” themselves in cherrytree (a gtk app) just aren’t visible.

EDIT: For what is worth, for my specific problem work is in progress so the question is only: can gtk app icons change system wide (with kde de) ?

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