http://www.vischeck.com/vischeck The above link allows you to upload an image or parse a webpage thru some software written at stanford that imitates what a colour blind person would see. It may be worth the time for you GUI designers to run a screenshot in it and see what 1/10 people see. Case in point: In RTsynth it is impossible for me to tell whether a given synth is on or off. That pixmap LED seems like a good idea, but maybe blue would be better ;) Not that I'm picking on RTsynth. Web page designers may want to also look at this, although the linux webpage community usually does a good job. --ant