- rework the entry style to work in both hc and normal
- rework drawing functions to accommodate hc
- buttons all get borders under hc now
- window picker titles are more legible
- alt+tab switcher tiles are visible
- dash is made more visible under hc
- popover menus are all more visible under hc
- search results borders are improved
- calendar days have a different look under hc
- overview bg is completely black in hc
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2527>
aafa011f2b