The Color of Silicon Atoms

It's not silica, because that's not colored like nothing. The amount of color changes actually correlated to how far the sodium atoms move around. It can make that change over and over again without that color structure being destroyed. So it's irreversible. How about that? You can't reverse the process. I'm going to say it changes from white to green instead - ultraviolet purple seems too convenient.

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Color: it's not just for art anymore. From red dwarfs to green algae to... uh... brown squirrels, science is chock full of color, too!

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Sources:

[Trivia Question]

Longest-lasting rainbow

https://www.smithsonianmag.com/smart-news/9-hour-rainbow-sets-new-guinness-record-180968527/

[Fact Off]

Crustacean larvae camouflaged glass eyes

https://slate.com/technology/2023/02/shrimp-larvae-eye-glitter-nanotechnology.html

https://www.sciencenews.org/article/glassy-eyes-young-crustaceans-predators