This stoop has an interesting use of tiles. I didn't get a great shot but there are three different kinds - the black and blue and yellow under the door:
Is this an abstract shape? I always see a person on a horse. It would be neat to see four together, forming the center flower.
And then there are some of these basic tiles seen on stairways throughout the Sunset:
This stairway has some styles I hadn't seen before. Perhaps they are newer?
And finally, sad, painted-over stair tiles: