With All Hallows' coming on apace, I got to thinking about fakey colored and crazy special effects contacts. I went through a phase where I had, alternately, violet, hazel, and dark blue eyes, and while it was fun, the people around me didn't seem to think it was as awesome as I did. I've even worn special effects contacts (they were cat's eyes for Halloween) and I thought they were pretty fun. But what about you? Have you ever used something like this for an extended period of time, or even just for a costume?