Hypercolors: These are the heat-sensitive putties that change color before your eyes; they never cease to amaze.
Thinking Putty Twilight hypercolor is thermochromic – meaning just a touch from your hands or a warm coffee mug will reveal a new “hot” colour. Allow it to cool off or stick it in the fridge! Then the “cool” colour will be restored.
Twilight – “Just as an evening sky melts into the dark of night, Twilight Thinking Putty’s deep purple color disappears with a touch of heat to reveal a fluorescent blue complexion”