I have Gnome on a dark theme, and the rulers become illegible (black on black).
I searched online and found several suggestions, many that helped, but none fixed the rulers.
- Personalization>Firefox themes only changes the background of the menu, that was already ok.
- Accessibility>“Automatic detect high contrast mode of operating system” changed some invisible toolbar icons, leaves the grayed ones invisible but the active ones look fine.
- Apperance>“Application Background” affects nothing outside the unused area on the program.
Any ideas?