I really love this idea, would like to incorporate in the stone in the basement area instead of mosaic risers - I've re thought this and think may be too overpowering. Thinking tiled risers and small pebble mosaics in floor would be much nicer.
Wonderful mix of material for garden path. Cobblestone sectioned between random pattern of bricks (reclaimed bricks offer a softer mellow tone of age along with irregular edges) and plantings of different types of thyme. Bordered with bricks.