Circles desktop background - created with Xpaint + Kuler ;-)
5 different colors inside.
2 sizes: 1440x900 and 2560x1600

edit: i decided to redo the whole thing with gimp because it renders gradients better. i also added 1 more resolution (1920x1080).
i started with one color, but will add more.
you can find the first here: gnome-look.org/content/show.php/circles-c?content=161121