Tango Desktop - in my opinion, the most simple and at the same time the extraordinary beauty of your desktop version, any operating system. On DA there are some people who put their strength and skill to Tango has been integrated into as many applications and shells.
I admire and respect these people.
1 - Tango Desktop Project
2 - GNOME Desktop icons .ICO File, 32x32 px, 48x48 px, 64