This is a simple and elegant theme based on Elegant-Arch-gtk3.
It includes a gtk2, gtk3 xfwm and metacity theme.
So it will not only work for xfce but also for gnome or unity.
It also includes a chrome theme so chromium will look naitiv.
For the icon theme i recommand ZorinOS.
The first and secound screenshot show my xfce setup with some gtk2 and gtk3 applications.
The third one is from my gnome-shell setup.
I hope you like it.