These shirts changed colors when they were heated up and were all the rage in the 80s.

What Allee has to say about this:
Well, here’s something else of yours that I missed that I have absolutely no idea how I missed as something like this would’ve never been off my body had I known it existed. I was buying tons of mood T-shirts in the ’80s but they all had cut out patches of special color changing hard fabric glued onto the T-shirts. I never saw these where the entire shirt changed color. It was like being a walking science experiment, a gig I most certainly would have signed on for.