I'd rock it (the car, white, red belts etc...)
If the bumper is a real issue from a resale perspective I'd pass
When you resell ... the buyer will see that paper trail and negotiate you down
Ask the dealer for a better price for this reason but I wouldn't bluff
I doubt they'd move on the price too much unless they've been sitting on the car for a while
McLean is in the Washington DC metro area and I bet they push those cars like <<insert fat kid loves cake reference here or something witty>>