According to Wikipedia there are an estimated 10.5 million American men who are red green color blind. I am one of them. I discovered this many years ago and rarely think about it as to me it is normal. However, I have discovered that those around me are endlessly fascinated with it—especially designers. So, to you I provide this public service message on color blindness.
How do we create sites that inspire that feeling? Well, it starts with a site that solves a challenging problem and is complex enough to require a certain amount of learning by the user. The goal should not necessarily be to create a simple site. The goal should be to create a site that feels painless to use no matter how complex it really is.