I have these: http://www.e-rudy.com/index_inner_de..._id=SN968102MR

I bought mine at my optometrist and they came with two sets of lenses -- racing red and a greenish one for gold. I bought the photochromic clear ones and some polarized lenses afterwards. These are geeky glasses, but extremely practical. The prescription in in teh insert, and you can swap lenses and flip them up or remove them when you go into a darker place (e.g., a store). Expensive, but worth it. I've had them for 6 years now.