Indeed a cool would be tool, there are two main problems tho:
1. I'm not able to make any tool for this kind of thing
2. Most modders are too lazy to give proper names to their materials, so if they kept the stock "# - Default" name from max it'll be quite hard to localize which one is the paintable(unless you have the .tex file or go and check yourself on the rpk)
Diegorborges about my Valo fix: "Now all of you must have your slrr folder like this: C:/BIGBOSSisMYlordANDiamHISbitch/SLRR LOL"