I would get a Marine Grade Paint, if you check out my thread from a few months back, I put this on my topper. I rolled it on with some Textured roller. it turned out great. No masking either. IF you go this route, dont thin down the paint, it didnt need it as it was just thin enough to roll on. I also some RTV in the seals and built up the paint to cover the seams also. Hard to do that with spray can without it running and looking like crap.