4 years ago, my grandson came to live with us when he entered high school. He is red/green color blind. He was told his father carries the gene. His father is adopted and does not have the disability. Therefore, we have not traced it back into his background. My grandson loves red because it is bright. Of course, anything in the red family looks red to him. We purchased all his clothes to coordinate with everything else. The only exception was his running clothes. I always hung the orange set together so he would not wear the orange shirt with red shorts. The first tme he did that, he encountered some interesting comments from his friends.