I need to buy touch up paint for my 80 Grand Prix 2 tone. I can't find anywhere in the car for a code. It's not in the trunk or under the seats or in the glove box. I'm 99% sure my upper color is Starlight Black, but the "gold", I can't match it very close to any samples I see online. The closest I can get is Castilian Bronze, I'm not sure that's the right color. Can anyone help?