Amethyst Blush Thinking Putty's soothing color will ease your nerves. With just a touch of warmth, the purple fades to reveal a surprising pink blush! Exciting and bright, this dynamic Thinking Putty is sure to perk up your day! As a Hypercolor Thinking Putty, Amethyst Blush is thermodynamic - just a touch from your hands or a warm coffee mug will reveal a new "hot" color. Allow it to cool off or stick it in the fridge! Then the "cool" color will be restored. Crazy Aarons Thinking Putty is made in the USA! CHOKING HAZARD - Small parts. Not for children under 3 years.