Linux Arc Theme

Arc is a flat theme with transparent elements for GTK 3, GTK 2 and GNOME Shell which supports GTK 3 and GTK 2 based desktop environments like GNOME, Unity, Budgie, Pantheon, Xfce, MATE, etc.

Available in three different variants.

For more information and available from here: https://github.com/horst3180/arc-theme