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There's a link to Dynomight's webpage in another comment thread. I've seen olo myself with it. It's to cyan what ultramarine is to sRGB blue.
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The word "officially" is the massive wiggle-word here.

Only one person on Earth has officially seen the color of my coffee mug. Send me Venmo for $10, and I'll officiate your viewing of the attached JPG....

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I'd heard of weasel words but now that you mention it they do tend to be rather wiggly
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Except that this requires extremely specialized equipment to individually trigger specific cone cells in your eyes, so I expect they have a pretty damn good idea of who has seen this and who hasn't.
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So, source: trust me bro.
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