Poutrance Profonde

Color blindess has several forms:

http://upload.wikimedia.org/wikipedia/en/b/b4/ProDeuTri.png
If you can't see the first you may have protanopia...
If you can't see the second you may have deuteranopia...
If you can't see the third, you may have tritanopia...

This Image will tell you if you have any colorblindness.
It confirmed that i can't see some red nuances, i'm Protanop :D

For more precise information and more tests, see this page:
http://en.wikipedia.org/wiki/Color_blind