More complete icon theme and better support for Qt apps in dark mode
I'm on OpenSUSE Tumbleweed.
I use dark mode on daily basis. Currently, Adwaita icons look off and don't have proper contrast in some Qt apps, like Okular. It seems Adwaita doesn't support most of the icons for Okular and just falls back to use Breeze-light icon.
Here is what I'd like to propose:
Before new icons for Okular are created, you could create an Adwaita-dark icon theme, so that even Okular falls back to Breeze theme, it will use Breeze-dark instead of light, which still looks better in dark mode.
Then you could create new icons. I think you could look at Adwaita Plus for reference.