Darker theme option than "dark" and right aligned clock label in Cinnamon

[k8s-cloud-io]

Would be nice to have a darker theme and right aligned clock applet in cinnamon - other than the one included.

I have forked your project to show what i mean in a feat branch - implemented SCSS generation of all new colors (at most #222222 instead of #333333, panels are now with 0.98 instead of 0.8 opacity), added windows 11 style clock applet for cinnamon.

https://github.com/k8s-cloud-io/Fluent-gtk-theme