Just in case any artist out there is color blind -- I knew a color blind artist in college, a couple of years older than me, Gary Ruddell. Very talented guy. He started doing major illustration work right out of college. Became known for science fiction and fantasy covers. One of the school's success stories. Went over to his studio once. He asked me if the pair on pants on a character in his painting looked okay or if he was mixing up his red and green.