Because we don't use cushions down here I painted the plywood compartment tops to the bunks with Rustoleum Almond Gloss. Quart right off the shelf at the local hardware store ... Looks close enough and blends in.
up north i took a piece of the counter to a Benjamin Moore dealer and had a gallon of Metal@Wood Enamel mixed to match. which is going on the inside bulkhead/headliner where the gel coat patch was too far off.
But that isn't "exact" either ...
like all oil based ... takes a couple of weeks to cure.