That's the first error of the objectivists. Mistaking "blue" as a property of the sky. Color happens in your head. That is why trichromacy, tetrachromacy, pen

That's the first error of the objectivists. Mistaking "blue" as a property of the sky. Color happens in your head. That is why trichromacy, tetrachromacy, pentachromacy, dodecachromacy etc. is a thing.