Many LD owners are always looking for products that will help to maintain their rigs. I've run upon advertisements for this product, AutomotiveTouchup, in several magazines recently.
I've got no horse in this race, in fact have never used or even seen this stuff used. So, for what it's worth...
Exact-Match Car Paint | Premium Automotive Paint for Flawless Results |... (https://www.automotivetouchup.com/)