I've achieved similar results usin' Stewer's method http://www.renderosity.com/messages.ez?Form.ShowMessage=2073866 along w/ playin' w/ diffuse & reflection settings Here's my "base" paint job; (BTW; I scooped the car @ http://dmi.chez.tiscali.fr/models1.html if anyone needs free cars ;-)

WARNING!

This user has been known to swear. A LOT!