In his video, Jake Laser explains that he painted on a type of crystal to the suit that used qualities similar to a chameleon that allows the suit to change colors and expand. The crystal paint reacts to heat, and Laser made a heat vest and bands for his arms that go under the suit. The under-layer of heat turns on in sections with a push of a button, activating different parts of the suit that are painted with the tiny crystals.
Source: Source: Cinema Blend
