Software installation window visibility

[Coeur-Noir]

Or…

If your theme of choice is available as a snap, you can « connect » it to the snap-version of software app.

Install Qogir Themes for Snaps on Linux | Snap Store

and after installing this ↑ you open a terminal and :

sudo snap connect snapstore:gtk-3-themes qogir-themes:gtk-3-themes

…maybe it’s not snapstore but gnome-software, see what fits with :
snap list

See also :

[ snap ] give same gtk and icon themes for all snap

Hi, if your gtk theme and icon sets of choice are available as snap, then you can apply them to all your snap app’s at once. Example here is with Adapta gtk I use a lot. And papirus icons. This ↓ is the first snap package for regular « cyan » adapta gtk theme, which includes also papirus icons. This ↓ second one is only gtk theme but with all color variants ! Then you have to connect these themes and icons to your snap app’s : for i in $(snap connections | grep gtk-common-themes:gtk-…