Since the majority of people I meet don't understand colorblindness and immediatly point at the nearest red object and ask me what color it is, read up on this shit if you don't understand.... this is a good article explaining it, with some visuals of coarse.
http://mattwilcox.net/archive/entry/id/513/
I'm red green colorblind, and with a lot of colored lenses I feel that they make for wierd contrasts between colors. I have found smoked lenses to work pretty well, just wondering what other colorblind people do/ have any suggestions.