Validating html using Checky

I was doing a quick review of a new design for a website so I went back to the Fedora box to check it with Mozilla. The colors were a bit unusual and I started to wonder how the site would look to a color blind person. Then I remembered the great Mozilla plug-in called Checky. So I installed Checky and ran the color blind test. It was okay but I really liked the convience of Checky. So when I went back to the XP box I installed Firefox and the Checky extension. Nice browser!