The Eclipse pain from Alsa Corporation is pretty spiffy since it changes colors the moment heat is applied to the surface. The paint consists of a basecoat that can change from either black to white or blue to white, but think of the possibilities involved since this is just a single basecoat. Imagine applying such paint to your mouse or keyboard - at least it will tell you whether your pesky colleagues have been snooping around your computer while you're away from the desk. They might deny it, but the evidence of a color changed mouse doesn't lie. Of course, you can take the extra step by performing some forensic tests on the mouse, but that'd be going too far methinks. What are the other applications you can think of for this paint?