In R. A. Salvatore's books **The Legend of Drizzt** series, the main character Drizzt Do'Urden is a Drow, a species in Forgotten Realms that live underground and far cousins to elves. Drow have characteristically red eyes. However, Salvatore decided to give Drizzt purple eyes. What was behind the decision to give Drizzt purple eyes instead of the standard red eyes for Drow?