He is father to the universe, and to all people. The first hunter. He walks the land, illuminating the boundaries, and making us all one great tribe.
Why is he green, grandfather?
To overcome the hate. If he were yellow, or brown, or red like us, or even white, any of the colors of man, which ever he was, that people would think they were superior. So he is green, the only one. And that makes the rest of us the same.