My friend, although his eyesight is not good, but when he wears glasses, sometimes he can even see the color of a girl's underwear. The key is that he is not Picasso. When you give me some pictures composed of irregular shapes and ask me to identify them, it's naturally a bit difficult. I can see some obvious ones, but I really can't see others. Then you ask me to distinguish the colors. To be honest, I can distinguish those colors, it's just that I can't express what the colors are in words. Thus, I was determined to have color weakness.