Exactly. Our brain interprets it but color really does exist.
You can really screw with people if you tell them that leaves are every color but green.
And when you press your hands together, nothing really touches. It is only the force of the atoms repelling each other that our brain interprets as “touching”. And for all practical purposes, they ARE touching, except they’re not.
Same goes for light, color, gravity, etc. When it is all you’ve known since your mother’s womb, you learn to interpret everything in a way that is productive.
It is said that what you see is actually upside down at the back of your eyeball, but your brain has learned to upright the image with its software. Well, there was a guy that walked around for months with a special viewer that caused him to see everything upside down. Guess what? After a month or two, his software was modified and he saw everything as upright.
And when he removed the glasses for the first time, everything “looked” upside down.
i.e. the book is stating the obvious.
I’ve thrown that at a few over the years. Is color the absence of reflection, or the absence of absorption?
Except in the winter.
What color are the stones?...at this hour?