http://clearalternatives.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=CA&Category_Code=CruisersScroll down to the bottom of the page. You get to choose the color after you've sent your selection to the cart.
These are better than painting either the stock lens or a clear lens with the Testors Candy Apple Red paint as many will suggest you do. (I'm a recent convert from this approach.)
The painted lenses look good and they work well at night, but they have greatly reduced visibility during the day. I've tried them all and these work better.
I also recommend that you switch to a 2356 or 2357 (whichever fits your socket) bulb from the 115x bulbs. They're a little brighter.
