Depending on the type of paint, matching it can be quite difficult, which is why a lot of shops prefer to paint a whole section, rather than just doing a touch up. If you have metallic paint on your coach, that just makes it more difficult to match. The person doing the spray for a metallic has to either have the exact formula from the manufacturer or he has to guess at the flop. If he does not guess right, the paint will not match. If you have metallic paint, ask to speak to the gentleman that will be spraying the coach and ask him about the flop and how he has determined that it will match what is there. If he can't explain it to you, it will not match. There are true professionals and there are others that give the appearance of being a professional.