They are listed that way because you can get any combination of those three when hatching them, unless you have a splash roo (which is my case) that you put over blue and splash hens only. You will not get black in this case.
I don't know if facing the wall when roosting is breed specific or not! My other chickens that are not Orps. do it to, so I wouldn't think so.
When I first walked into the coop, this pullet had both of her wings around the hens on either side of her. By the time I ran to the house and got the camera, she had taken her wing off the hen on the left. It just looked like she was hugging both of them!