Picked up a really cool new item at the Mouse Gear store today. The "Clear Magic Band". At $49.95, it's a bit pricey, but its made of some advanced material that really is clear. The cast member told me to keep it in its container when not wearing it otherwise I may never find it again. I like it because you don't have to worry about choosing a color.
As you can see, it's hardly noticeable at all when wearing it...