The different colors of human's eyes are related to the heredity and races. Different races have different colors of eyes. Eastern people and Western people have different chromocytes of iris. The hybrid people have different genes origination. So sometimes they may have two different colored eyes, it is normal and interesting. Theirs father and mother give them one eye gene superlatively. The chief actor of Prison Break of Michael Scofield who played by wentworth miller, he has two different colored eyes too. The left one is hazel and the right one is light green. He always wearing colored contact lenses to hide his secret, so it is hard to find this point from is photos.