Potterdog: We may both be right. Say Salazar Slytherin had green eyes. Lily Potter had green eyes and so does Harry. Lily Potter may have been the last direct decendant of Slytherin until Harry was born. So whatever powers Harry got from Voldemort were quadrupled because Slytherin blood runs in his veins. I'll have to see what eye color is mentioned for Tom Riddle if any. Did you find an eye color for Voldemort?