How to Design Web Accessible Pages for the Color Blind

We have a client site going live next week. During our normal quality control testing procedures the client called me to see if the site would be viewable by people who are color blind. The base corporate color is a shade of maroon. Actually my brother is color blind as was my grandfather. I asked my brother to check the site and it passed with flying colors (no pun intended ;-) ).

But it got me to thinking about other sites that include Red and Green. How would they fair?

Check out How to Design Web Accessible Pages for the Color Blind for more info on this.