charcoal or sage green, maybe even taupe., i might lighten the door color and as to the rock gardens i wouldnt do fountains, with west facing you will be filling them all the time. take the little fencing out, I ould fill the left one with concrete like the drive and put a large planter or two, might do the same on the right, but make it more like a seating area with that bench and a few planters.