I don't know what Revere Pewter would look like with the browns you have, but I've seen pictures of it with walnut and calacatta marble and it look very nice. Buy a sample and paint a board with several coats and set it in the room to see if you like it. It is a Benjamin Moore color.

I like all of these combinations, but I think the last picture would be my inspiration because of the white railings and trim against the dark charcoal siding. A simple combination which will work with your roof color.

since you dislike the brick color, why not paint them? Romabio has a masonry paint that is almost maintenance free. paint them whatever color you like and pick whatever siding you like. or you could do a composite wood siding (this is shake, but they make siding)

Thank You! I will take your advice.