Gnome theme (gtk 3.22), based upon Adwaita-Maia dark skin
Compatible with Gtk 3.22.
For Cinnamon 3.2 and older versions of gtk (3.18 and below), use the predecessor
Clone or download the repo and move the containing folder
Obsidian-2 to your
~/.themes directory, or to
/usr/share/themes (needs root access).