More to explore:
Tutorial Mirror Tiled Stair Risers - don't want the mirrored tiles, but love the idea of using subway or mosaic tiles on the risers
mirror tiled staircas
Great idea for dark stairways. Mirror tiles.
Mirror tiles on stairs... I like the idea but maybe with glass tiles instead to add some color
disco ball stairs -- I don't know that I would really go disco ball with this, but I like the mosaic tile idea.
Not so sure the mirrored tiles match the house style, but great idea.