As I prepare for my SQL PASS 2009 presentation "Solving the Bill of Materials Problem", I'm trying to make sure I use colors that are visible to people with colorblindness. I've found two tools to help accomplish this. Colorlab available at
http://colorlab.wickline.org/colorblind/colorlab/ renders the standard web color palette as seen by people with various color vision deficiencies. Vischeck
http://www.vischeck.com/vischeck/vischeckImage.php allows you to upload your own images (e.g., PowerPoint presentation, screen capture of SSMS) and see how they'd appear to people with any of three different types of color vision deficiency. My goal is to have SSMS configured so as many people as possible can easily see the code.