I personally had experience of black paint on the walls in the Hotel Grand Ferdinand in Vienna . Here a designer created drama and theater atmosphere with a black wall and white items. I loved being in the room of the hotel ,although outside was raining inside I felt comfort .
If you don’t have a courage to paint all walls in black color , You can try darker colors in a bedroom or living room. I am recommending
to complete a design with bright furniture. Also remember about right lighting , use lighting only in places where you really need light.