Thank you for the information - that's exactly what I was looking for. I played around with the values for a little bit, and I actually found that the most realistic lighting/reflecting combination for the complete-character avatars I'm using is:
Code:
avatar.color(1,1,1)
avatar.ambient(1,1,1)
avatar.emissive(0,0,0)
avatar.specular(0,0,0)
Thanks again for your help.