I want to better understand this because the sky is clearly a specific color that has been there since the beginning.
How did proto humans not look up at the sky and considered in their feeble brains, "everything above the ground is this very unique color. It's different from the ground, and the plants."
I get that sea and lakes really don't look blue. But did they look up and not see some shade of blue on a clear day?
We can only hope