When people decorate their houses, they would focus more on the rooms while leaving everything in less detailed manner. If they have stairs, they would concern more about what kind of stairs they you use without getting too many details
The Powerful Impression Black Gives in the House
Black has been a dark, deep and powerful color. Added in a room as a decoration seems like the furthest thing black can do. As black radiates a strong look, it is understandable that using black might get some people