I made one of these using paintwithpearl colour changing pigment.
It worked a treat - was super engrossing for my friends who may or may not have been tripping on a substance that comes on little squares of blotting paper.
Regarding side effects, when the cloth is dry it feels like breathing through a regular shirt - you're not inhaling any dyes or anything.
If you wanted to go really crazy, I bet you could find black thermochromic paints that change at a few different temperatures for a real lightshow. Imagine this with three layers: 75 degrees, 80 degrees and 85 degrees. It'd constantly be in flux.
I nearly died when I saw the end result. I am not familiar with the movie The Watchmen. The result was amazing. Well done. I hope it's safe to put that over the face. Thanks for posting.
It worked a treat - was super engrossing for my friends who may or may not have been tripping on a substance that comes on little squares of blotting paper.
Regarding side effects, when the cloth is dry it feels like breathing through a regular shirt - you're not inhaling any dyes or anything.