- panel fg color was derived from bg color. Not a good idea as it's not just light/drk, but HC as well. - deriving from dark theme means contrast for things like popover items is better. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/904
- split _common.scss into widgets - improve _drawing functions - minify SVG assets https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/904