Description - Vertex GTK theme contains three variants: Vertex (dark header-bars and toolbars), Vertex-Light (completely light) and Vertex-Dark (completely dark). The theme supports Gnome 3.10, 3.12, 3.14 and 3.16, aswell as Ubuntu and Elementary OS Freya. For Ubuntu 14.04, please use the 3.10 version and for Elementary OS Freya, please use the 3.14 version. Chrome/Chromium and Frefox themes are included.
Credit - horst3180
Installation Instructions - How to Install this theme?
License - GPL