This stuff, electroluminescent film, has been around for a while. It's in some light-up watches and as a background for many endurance race-car numbers (cars that run in the dark), battery-powered emergency-exit signs, etc. I just came across this source for blue, white, and red for aircraft use. The material will definitely be getting cheaper, and already is if you find an industrial supplier who will give you samples.
This particular tape is dim-able and can be cut-to-length. First uses could be for under-car neon-look lighting, interior under-dash lighting, etc.
A power supply can be readily fabricated by someone with some electronics knowledge.
Keep in mind this is not the only source or configuration for the material.
Edited by Ace-Garageguy, 04 March 2013 - 09:30 AM.