here are some references on how to set up map color schemes (including schemes for various types of color blindness).
Color schemes for improved data graphics; EOS; October 5, 2004; vol 85, no 40, p 385 Comment on color schemes for improved data graphics, EOS, May 17, 2005; vol 86, no 20, p 196 the university of Oregon, dept of geography (their Data graphics research page), has a nice article (and links) on color schemes for maps. I do not have the url, but it should be easy to search for. s. figuers
