gtk-theme-orchis

Orchis is a flat style gtk theme for Gnome/Gtk desktop. It is provided generally from gnome-look.org: https://www.gnome-look.org/p/1357889.

To use this theme:
1. Install the local theme from gnome-look.org
2. Install this snapped theme
3. Use gnome-tweaks(https://packages.ubuntu.com/jammy/gnome-tweaks) to change your local theme. This will update the snap theme being used as well.

For a brief period, you will need to manually connect this theme to each snap after the above steps, in order to tell the snapped app which theme to use. For example, to connect gnome-calculator to this theme:

 $ sudo snap connect gnome-calculator:gtk-3-themes gtk-theme-orchis:gtk-3-themes