have you thought about doing something like this?
obviously the MS paint version may not be to scale!
but some sort of brick wall to blend in with the rest of your patio scheme, and have the same angle as the roof.
If its rounded off nicely in the front, with a nice top moulding, it would look pretty good i think
there is always the option of adding castle like brick window cut outs, anything that would flow with the angles of the existing patio