This is a very sleek bathroom and I love that they went with such a bold color scheme. The thing to keep in mind when it comes to these sorts of designs is that you do not want it to be gloomy. That is the risk you run if you use black heavily. But if you are like this designer than you will know that to succeed at darker tones you need to balance it not only with white, but also by having reflective surfaces. The tile on the floor and the bathtub wall are both reflective, with the bathtub wall being more so. What this does is help accentuate the natural light in the room.