Good point about coevolution. Of course all thoughts on this subject are (currently) speculation.
Here's a quote by Georgia O'Keefe: “Whether the flower or the color is the focus I do not know. I do know the flower is painted large to convey my experience with the flower – and what is my experience if it is not the color?” I don't think color is the whole story: As I write this I have a vase of yellow tulips in front of me. My wife and I are particularly fond of this particular combination, any other flower of the same yellow color won't do.
Here's a quote by Georgia O'Keefe: “Whether the flower or the color is the focus I do not know. I do know the flower is painted large to convey my experience with the flower – and what is my experience if it is not the color?” I don't think color is the whole story: As I write this I have a vase of yellow tulips in front of me. My wife and I are particularly fond of this particular combination, any other flower of the same yellow color won't do.