The resale market is smaller for orange/yellow cars for sure, but within that market, the people that do like orange/yellows car, like them so much that resale should never be a problem, added to the fact that there aren't many orange/yellow cars about means that they usually don't hang around. Supply and demand and all that
When you sell a GM car, you are competing with about 150 other GM cars for sale. There will never be more than 2 or 3 yellow or orange cars or sale at any one time.....