Rear fog light help?

Anybody know where I can get my hands on a red lens to replace my left reverse light on a New Beetle?
I want to set up a rear fog light.
Thanks in advance!

Use a colored bulb. Mine is amber and 5 watts. It shows up better than a clear 21 watt bulb behind a red lens and isn't confused for a burned out brake light on the right side. Just puleeeze don't use it unless conditions warrant.

Thanks for the idea. Of course it would be used for true foul weather driving, and you're right, most drivers seeing the light on MB's, Jags, & BMW's do confuse it for a light problem - but that's ok - they see it! And that's what counts.
(I'd still like to get the correct lens - anybody?)

New Dimensions has 'em, but not listed on their web site. Call for details at (800) 637-2781. As of last week, they were even in stock, yee-haw.