Agggh! I feel your pain, heres what to do you best just pick up a decent scratch remover at any Advanced Autoparts or where ever and buff the hell out of it. Next you are best to call the nearest pontiac dealer and ask for the paint codes for your car, they are located on the sticker on the inside of the trunk lid. One should be a 4 digit number this is your black base coat and another is a 3 digit number this is the clear coat this is what gives you the shine. Put on each coat and let it dry then buff it like hell again to remove any excess paint. Remember don't settle for a black that is near your color it won't come out too good unless it is exact.