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Phil Plait's avatar

I'll note that pink occurs in nature pretty often, in iridescence! I see pink in clouds quite often in Colorado. :)

https://www.flickr.com/photos/badastronomy/11941223576

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Holly Rabalais's avatar

Fascinating! My husband is slightly colorblind, so we often have discussions about color perception. I’ve wondered for much of my life: How do I know that what I perceive as blue isn’t green for you--and we’re all calling it yellow?

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