i like to use this color in real life, the combination of black & white is just good as casual look.
in the upper floor, i use white theme. there are 4 section area at upper floor, game section, pet section, reading section, and child section. They can play arcade games, reading books, play with critter and have a gossip session when their child is playing.
in the lower floor, i use black theme. In this floor, i decor it with basic cafe needs. They can have some coffee or eating food and talking to each other just like regular cafe.