How we see color may be not as we think

I had recently stumbled across this episode of Brain Games on Nat Geo that explored how we see color. It was a very interesting and eye opening show. It also had Fighting Gravity on it (You know, those guys from America's Got Talent). It also explained some about color blindness. My grandmother was color blind. Often she would wear orange and swear that it was green. ? It suppose to be hereditary so sometimes I wonder if I am seeing colors differently than others. As a abstract artist who relies heavily on color it is a bit worrisome. Maybe I am not seeing my colors like those viewing my work.