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Re:Mammalian Near-IR Vision Through Injectable, Self-Powered... by whatshisface on Tuesday March 05, 2019 @09:42PM (#19316033)
>It might be possible to design a mixture of these to generate "impossible colors".

Since they just convert light between frequencies, they won't show you any colors you couldn't see by illuminating your retina with the output frequencies the old fashioned way.

Re:Mammalian Near-IR Vision Through Injectable, Self-Powered... by jakeogh on Tuesday March 05, 2019 @10:07PM (#19316124)
Agreed, I'm referring to type 2: https://en.wikipedia.org/wiki/Impossible_colors