Last week I got a replacement key for my early 2005 Lotus Elise with a lighted key.
It's a ILCO DWO4RAP for a Hyundai
I went to a real locksmith (you wouldn't believe how many "locksmiths" I called before I found one with a retail store and knowledge to tell me if they had a certain blank in stock).
I asked for the Cole X222 as instructed by Lotus Talk, but the key was narrower than the shallowest groove on my original key. So the guys looked at their stash and came up withy a Hyundai key, ILCO DWO4RAP USA. It has a plastic head, so it looks nicer than the Cole X222. After a bit of back and forth between the car and the shop (I drove to the shop in the Lotus), the key fits and turns nicely in all the locks.
Here's where I went for a key
Dexter Lock Services Inc
3300 N Halsted St
Here's a photo of ILCO DWO4RAP