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?
This visualization of a chic apartment in Germany was designed by Alexander Zenzura. The design is based on a neutral color palette, and a style that is both hip and elegant. Renderings courtesy of Alexander Zenzura