when coors light bottles get cold the mountains on the label turn blue, how does that work?
Temperature sensitive ink. There’s also a version used for security marks on documents.
Now that the question has been answered, time for a hijack. My monthly train pass has a colored stripe that changes color or disappears when it’s heated. Most people can change the color just by holding it between their thumb and index finger, but I usually can’t unless it’s hot outside. I can only change the color by breathing on it.
Begs the question - Why does it have a heat sensitive stripe?
To prevent counterfeiting.
Is that stuff safe for skin contact?
It’s a mood detector beer. The colors and what they represent are:
Blue - hopeful, slight buzz
Green - friendly, a bit grab handy
Yellow - happy, laughs too loudly
Orange - wary, racist remarks likely
Red - paranoid, challenges to a fight
Purple - calm, passed out with a chance of inhaling own vomit
But how cold is it when the label turns blue?
Apparently, nobody really knows, and if Coors knows, they’re not telling.
Why not? Those thermal sensitive shirts seemed to be a big fad in the 90s for a while. I can see where it might not be a good idea to drink gallons of that stuff, but I’d suggest against drinking gallons of pretty much most things.
…of course, that might explain this two decades’ old rash. 