# Dark theme support in GTK 3 apps Some old applications, like Rhythmbox, do not support the GTK 4 / Adwaita theme on modern distributions like Fedora. Even though there are many solutions available, I'm using this simple fix that requires just an application restart after making the change: ``` ~/.config/gtk-3.0/settings.ini [Settings] gtk-application-prefer-dark-theme=1 ``` ## Integrations ### CSS patch for i3wm Also, found this file in my backup folder, so let's keep it here, as it may be needed elsewhere (suppose in i3wm case) ``` ~/.config/gtk-3.0/gtk.css .window-frame { box-shadow: none; margin: 0; } ``` ### Adwaita theme port Personally, I'm not using it, but it would be helpful at some point: => https://github.com/lassekongo83/adw-gtk3