Here are the tests you need to see if you have color blind issues.
This web-site defines being colorblind and will educate you about the different types of colorblindness. It explains why you may be colorblind and what teachers, school nurses, and parents should know about being colorblind. You will learn about a new “pediatric” color vision test for early detection. If you think you may be colorblind, you can test your color vision on-line here for free.