Vertex is a theme for GTK 3, GTK 2, Gnome-Shell and Cinnamon. It supports GTK 3
and GTK 2 based desktop environments like Gnome, Cinnamon, Mate, XFCE, Budgie,
Pantheon, etc. Themes for the Browsers Chrome/Chromium and Firefox are
included, too.

The theme comes with three variants to choose from. The default variant with
dark header-bars, a light variant, and a dark variant.