I have a 500,000cp lamp that I cannot find a red lens to fit. Their calling for snow this weekend and I don't want to pass up the opportunity to go out maybe Sat. nite. Is it that critical that I have to have this red lens? I work for a company that sell school buses, which have a ton of red lenses on them, but their all fluted. They just disperse too much of the light. I've read on this post guys using something to dye the lens, but I still want to use it as a spot light.