
Well, I've reskinned both warthogs.
Pictures:

I've also made a XCF file (gimpshop), which has a transparency over the coloured panels of the warthog. Basically, just use the hue/saturation tool on the top layer, then merge down and save as dxt1.
Here's an example of a coloured warthog made with this file.

Download:
warthogskins1-harpsichoid.zip
Zip file contains the two patterned warthog skins, red, blue and purple skins, and the gimpshop template.