Eat your hamburger, Parker.

But he is blue, which makes this picture even more accurate as an imitation of old school Japanese art. You see before Japan was opened to the outside world the Japanese language made no distinction between the colors blue and green, referring to them by the same name just like some european languages had no distinction between red and orange before the modern era.

Now why this is I can't tell you.

I can immediately understand why a medieval or earlier european person might not recognize the difference between red and orange, as the only shades of orange that can't be mistaken for a shade of red that you find in nature are the colors of tropical and semitropical citrus fruits that few europeans would have ever seen before renaissance era trade routs were established.

I have no idea how a group of people could think that the color of grass and the color of the sky were the same color, but they did.