Da Vinci Code Albino issue - wasn't there room in the budget for contact lenses?

I saw The Da Vinci Code today. I’ve heard a bunch of stuff about how albinos are sick of being portrayed negatively in movies and this movie is one more example of that.

However, the character of Silas has blue eyes. If he were a true albino, wouldn’t his eyes be red? Sure, the guy’s really pale and has white hair, but maybe he just doesn’t get much sun.

This myth gets exploded regularly, but might as well do it again.