So my friend couldn’t get a sticker on his Pontiac...until some rust holes were repaired. The car has a good amount of “Patina “ on it. So I weld on a lower fender panel...and big patches front and rear of wheel on the 1/4 panel. I make a bench mix of Gold and fuzzed it in. My friend sees it....and says it looks good but...it doesn’t match the rest of the car... I said what do you mean....he says , I like the rusty look. I said...leave it with me a day or 2...and I’ll smoke a fat one and see what we can do about that. ..So I used my model train weathering knowledge...and applied it to the Pontiac....He was shocked...in a good way. That was the most fun I’ve had in the last 40+ years of paint and body work.