By the way, have you seen the Firefox extension "Let's Get Color Blind"? It can simulate colorblindness, but perhaps more importantly, it can Daltonize web pages on the fly to make them usable by the colorblind -- even including real-time stuff like video. It blew a protanopic coworker's mind. https://addons.mozilla.org/en-US/firefox/addon/let-s-get-col...