Does anyone have any first hand experience painting the exterior of an aluminum trailer/motorhome with one of the new chrome paints and a clearcoat? I want something brighter than rattlecan aluminum, but the good stuff looks like $1500 a gallon. I see several brands available on the web and lots of painted cars, but no aluminum and no consensus on the "almost like chrome" colors which will work fine for me. And no feedback from anyone who has done it. Anyone?