I like purple, but its a problem -.-

So whenever any of my sims have glasses, in the play mode their lenses are always filled in purple, so you cant see their eyes. Even in the little picture of them, the glasses lens are purple. This has been a problem for me since I purchased the game, and I have had it, my friends. I just wanna see their perty eyes, amn. Not a cheap shade of purple! How do I do?