SUMMARY I don't know if this is the right section. But since Breeze-dark doesn't have there own theme anymore and now depends on colors, some other apps (gparted, Flatpaks) don't follow the dark theme anymore. These apps use Breeze light theme, because they don't know the difference between Breeze and Breeze Dark. I fixed the Flatpak using by doing: 1. Open /home/nigel/.config/xsettingsd/xsettingsd.conf file 2. Change Net/ThemeName "Breeze" 3. To Net/ThemeName "Breeze-Dark" After changing that section and autostart xsettingsd Flatpak now follow Breeze-Dark instead of Breeze. I think this should change by default for less techy users. I had the same problem with apps like gparted, because I think they run as root? Fixed this by: 1. Go to /home/nigel/.config/gtk-3.0/settings.ini 2. Change gtk-theme-name=Breeze 3. To gtk-theme-name=Breeze-Dark This also doesn't get done automatically when I set Breeze-Dark as global theme and GTK Theme in application settings! Summary: Flatpak and Apps like Gparted don't follow Breeze-dark theme, because System Settings GTK says Breeze in stead of Breeze-Dark. STEPS TO REPRODUCE 1. Follow the instructions above. OBSERVED RESULT Flatpaks and Apps like Gparted uses Breeze light theme while I have set theme to Breeze-Dark in System Settings EXPECTED RESULT Flatpak and Gparted and Grub-Customizer to use Breeze-Dark when this is set in System settings in stead of Breeze light SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux (available in About System) KDE Plasma Version: 5.20.4 KDE Frameworks Version: 5.76.0 Qt Version: 5.15.2
To add to this, some apps work with theme set as Breeze example : GIMP and some most don't (as author mentions , and those i use) example : Libreoffice (other than OP's example) Also easy way to change it to breeze-dark theme would be ``` gsettings set org.gnome.desktop.interface gtk-theme "Breeze-Dark ```
*** This bug has been marked as a duplicate of bug 485028 ***