This is a modified version of UbuntuV.Graff, originally made by meisok.
I've changed the colors around to make it fit darker themes, like the "New Wave" theme I'm currently using.

All credit goes to meisok for the original image. Thanks for the cool image!
The original can be found here:
http://www.ubuntu-art.org/content/show.php/UbuntuV.Graff.V2?content=62538

This is a 1600x1200 png image.