[Crazy Jetty]

I saw a commercial the other day for a new Hotwheels line.
Now, I don't remember what the line is called, but the gimmick blew me away.

It's a variation on the paint/plastic that changes colors based on water tempurature, like the G2 Aquaspeeders (I think?).
Only this is light sensative. With a little laser, you can temporarily change the colors of the cars. The sets include tiny little stensels to make temporary tamp decals and the like.
I don't know if this is tempurature based, or photosensative, like glow in the dark plastic.

But either way, this blew my mind given how it could be applied to transformers as the BEST GIMMICK EVAR!!!
Seriously, make the transformers out of this plastic, or decoed with this paint (Whatever it is), and build the lasers into the TF's handheld weapons and bam! Instant battle damage! Real time cause and effect weapons fire!
I mean, how cool would it be to have Megatron and Optimus in a firefight, and taking damage that "heals" itself over time?