Got bored and turned some knobs and dials in Blender3D a little while ago. The end result was this.

Fiddling Aboot

Nice balls you've got there.

The graffiti texture was taken from a free texture repository, although I’ve already forgotten which one. Materials on the three balls and lighting were done in blender by my own uneducated keyboard slapping. Small contrast adjustment made in GIMP after rendering.