...believe it or not fro Popular Science magazine!
But wait, don't fall asleep just yet...!
The 11-Year Quest to Create Disappearing Colored Bubbles
Chemical burns, ruined clothes, 11 years, half a million dollars—it's not easy to improve the world's most popular toy. Yet the success of one inventor's quest to dye a simple soap bubble may change the way the world uses color
Mood: R U thinking what I'm thinking?......Oh dear!
Yellow to red when Hot, probably possible with some sort of temperature sensitive paint, you can by drinking mugs where the logo/design changes with a hot drink in it.
Maybe an idea for tyres that change colour when they are up to temperature, the end of cold tyre falling off excuses, or maybe I didn't notice the left hand side was still pink??
Ducati's can already turn black ink to red on bank statements!!