Don,
Yes, I suggested that before. I haven't had any problems matching paint on my red roadster frame or on a black one I did. If there is orange peel then it wasn't cured with the correct time or heat. If you get a chance look at our trailers, they look like they are sprayed. I wouldn't do your son's frame any other way. My 2 cents
That frame is a work of art. I mean Dan
Ken