I've been doing a little bit of reading on how glow-in-the-dark aftermarket gauges work for the dashboards of some cars (very similar to indiglo technology), and was wondering if the same principle might be applied to the buttons on the empeg.

It seems that a coat of conductive material is applied to a surface, and then covered again with an application of a protective material. Then, apply voltage and it lights up.

I find it very hard to believe that someone has not already created a spray-on application process for something like this yet, but I don't know of it (or how I would even search for the material). I would love to give it a shot, though...