bough a Keystone Hobbi today

Fell in love with the ability to trailer both my quads in a small trailer, without water and propane I might be able to get all 3 quads in there. The blizzard started so no better pics

I'd like to paint it up to match the truck, what paint would work on fiberglass? The inside has a lot of gray and black, some bright whote paint on the walls would be nice, is it silly to paint the walls?