Readers of this blog may remember Tim Bayly is color blind. He has mentioned it from time to time over the years, but he's not one to complain. If you've ever wondered what it's like to be color blind, you can now find out over on ChromaNope.com.
The results are quite fascinating...
Here are a few colorful websites to try:
I have shown ChromaNope to Tim already, and he cannot tell any difference between the first three images. I think he has red-green color blindness, but there are other forms of partial color blindness out there.