I've seen a lot of clawfoot tubs with subway tile accent wall(s). Some clawfoot tubs are painted black. Maybe the grey tile floor, white subway tile, black outside the tub? too much tile? too much white?
Bathroom floor tile - not so plain white bathroom with great walk-in shower, grey & white floor tiles and grey countertop add interest to basic white room, change gold handles to match shower fixtures, Vancouver, BC