Perfectly matches the Arc-Dark and Arc-Darker themes in Linux.

El Mejor Tema Oscuro

No mobile support

[X] Free
[X] Sensibly licensed for an asset project
[X] Matching desktop environment theme
[X] All encompassing - fixes things firefox's default dark theme doesn't, such as Firefox Home

Can't argue with it, a fantastic theme and props to Mozilla for finally making such a universal theme possible.

good theme than default dark theme.this theme care for eye.

It looks not perfect but among others it is the best one for my taste