- avoid the color tint for the system grey background Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1599>
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