TILE THE SINK WALL. love this shower with the built in bench and seamless glass enclosure. Not sure about the marble or the tile work on the back. Maybe a little too much for my taste. The lights in the shower are cool too.
I like the tile color, size, shape, and pattern. I think this would look nice with a green glass tile running about from top. Or rotate the pattern to run vertical and a stripe of green glass tile in middle center wall.