You can change the color of an avatar mesh. The avatars included have a body mesh and head mesh. The following shows to change the color of those.
Code:
import viz
viz.go()
male = viz.add('vcc_male.cfg', pos = [0,0,5], euler = [180,0,0])
male.state(1)
meshes = male.getMeshList()
vizact.onkeydown('1', male.color, viz.BLUE, meshes[0])
vizact.onkeydown('2', male.color, viz.BLUE, meshes[1])