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Developing for Color Blindness?

Satan's Librarian asks: "I develop software in the music industry. Most of the software is very graphical, with lots of knobs, buttons, and various other custom controls. Recently I realized one of my interfaces would be difficult for someone who was colorblind - fortunately before it shipped. How do other developers avoid this? Is there software available on XFree86, Mac OS X, or Windows that can let you run in a modified-color mode to emulate the various kinds of colorblindness? I've found one site with some cool demos of how colors are perceived with the various types of color blindness, and a lot of self-help sites and software to help people who are colorblind, but no software to help developers and graphics artists avoid causing people difficulties in the first place yet - although from the demos and articles, I expect the algorithms would be trivial. Seems to me that if the statistics I keep seeing for colorblindness are correct (~8% of males, ~2% of females), this could be an often ignored problem that excludes a lot of people from some software. If you're colorblind, how do you deal with websites and software that was poorly designed for you? Is it a problem often?"

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