The 4797L is the Dupont Code for Medium Blue. @niceolddart Is right about the backside of a hood or decklid being a good place to look for the original paint. However, I think that one of the best places to look is under the door striker post. Use some tape to mark the original position and then remove it. The paint under the strikernpost washer has never seen sunlight, never been dirty, and should be prisyteen.