Black might not be your first choice for a children bedroom. Black has so many negative feeling associated with.
Black is a bold and sophisticated colour. Beside the classic Black & White. Black goes very well with natural birch wood. While if you love colour, bring vibrancy to the room with Yellow or Neon colours for a striking interior.
Have a look at these children bedroom interiors and get inspired.
images via @theglowdotcom and http://lillenord.com/