I though this was advanced, though I have no idea if it's true.
Edy was looking at a can of whipped cream at dinner (we were having fruity crepes, so no comments please), and there was a watercolor picture on the can with some shadowing on the whipped cream.
Edy says "That's purple." I say "What's purple sweetie?
She says "No, it's blueish."
Which is exactly what it was.