This stuff is incredible!
Thermochromic Coating - an overview
Temperature Heat Activated Color Changing Paint Thermochromic BLACK changing YELLOW at 82⁰F : Arts, Crafts & Sewing
Thermochromic pigment. Colors vary. 1 gram.
Thermochromic Pigment 1g
Temperature Activated Color Changing Thermochromic
Thermochromic Pigment - Blue - 10g : ID 4139 : $4.95 : Adafruit
The Apple mixed reality headset ahs finally been unveiled and it's
Painting in REVERSE with Thermochromic Paint
Color-Changing Wall Art Activated by Heat. (Made With Loomia's Heating Panel) : 8 Steps (with Pictures) - Instructables
Universal Color Changing Paint Activated by Body Heat
Low Temperature Cold Activated Thermochromic Pigment
NEW PRODUCTS – Thermochromic Pigments in Various Colors « Adafruit
Flexible thermochromic fabrics enabling dynamic colored display