Griffin Mono Vertexed is designed to provide your distro a flat modern and different look.
It is based on Griffin Mono and Sardi Mono Vertexed.
New icons will be adding with every update.
Just download the tar.gz package and extract it in the .icons directory. Then change the icons with distribution specific tools like Gnome tweak tool or Unity Tweak tool.
You can also check out Griffin Mono here https://www.gnome-look.org/p/1213847/
and Griffin Bolt light GTK theme here https://www.gnome-look.org/p/1213442/