Can you manually change the colors or apply a V3 texture to the body? If so, just change all the materials for the body to the same color and them re-save the file to the library. If that doesn't work, then my guess off-hand is there's a mistake on the Materials section and you ended up with some wrong materials for the body. If you'd like, you can send me the last part of the file, where you get the Material blocks (material skinhead, etc.) and I'll take a look at it to see how it compares to my file. Cheers!