Came across this eBay ad...
Porsche Boxster 986 LED Taillights Custom 97 04 | eBay
I like the idea, though the workmanship here is pretty shoddy (I wouldn't pay $100 for this electric taped mess).
I know the purists will demand nothing more than stock amber tail lights, but thought some might find this idea interesting. I plan to do something similar in the future, except mine will actually look good up close.