adw-colors

1. Copy the gtk4 & gtk3 file below to ~/.config/gtk-4.0/gtk.css & ~/.config/gtk-3.0/gtk.css (Make backups if the files already exists) .
2. Enable the corresponding color preference in gnome-tweaks (adw-gtk3 or adw-gtk3-dark) and gnome-control-center, [e.g Dark for dark color themes]
3. If you use flatpak apps, run:



sudo flatpak override --filesystem=xdg-config/gtk-3.0 && sudo flatpak override --filesystem=xdg-config/gtk-4.0

4. Restart any open applications or log out and in again.



_{! Tip: Use different color themes for different Flatpak apps. Add a different gtk.css file to `/home/user/.var/app/[name of flatpak app]/config/gtk-4.0/` (or gtk-3.0).}

Accent-color-change is a small cli program that allows you to change your accent color globally on GNOME 47+. It will use the included gnome accent colors and also set them to gtk3 and non-libadwaita gtk4 applications.

For more details: https://github.com/lassekongo83/adw-colors/tree/main/accent-color-change