I've been contemplating making one of these, I had a circuit design all made up for a bi-color LED indicator. Luckily I didn't end up ordering any circuit boards for it. I think I'll buy one of these on my next order.
Are you planning on getting in any new color buttons like...translucent light blue, translucent red and translucent green? If you can get them on your next order, I'll purchase bunch.