Looks so cool! Love the day-night difference. Fantastic theme.

Plain, very useful

This is now my favourite theme.
The only issue I have with it, is that it can't detect the theme of my Ubuntu 20.10 like it can on Windows 10.

Kann nicht entfernt werden - in "Verwalten" fehlt der Eintrag "Entfernen"

Cannot be removed - missing entry in "Manage"

I like it but doesn't Firefox already come with this theme built-in?

Isn't black on linux, is purple, pink and white, does not look as good as it does on Windows. the background image is also quite large.