Having the same problem with the painted rings on both security lights. I have purchased two new lights for replacement that have a chrome plated ring. These lights are available at most Trailer Truck supply houses and/or cargo trailer sales & service. The replacement lights that I bought, yet to install, are used for inside lighting for trucks with box beds or cargo trailers. They look to be just as water proof as the lights supplied by Heartland. The painted rings start to rust on the outter rim of the ring because this is a sharp corner and paint doesn't adhere to a sharp corner. If I do decide to paint the ring, I will try to do a little filing and sanding to ahcieve a small radius on the thin sheet metal ring so that the paint doesn't run away from the sharp corner.