This shelf is called String and is a true Swedish classic. It was designed in 1949 and is still super modern! Since we're moving in a few months I can't help myself but clicking my way around the internet searching for new furniture. You can see more here. (oh, I so wish the last to images were snapshots from our livingroom!!)
Imagine a black String on a black wallpaper with some cool white and black things. Maybe one small red item just to accent it all. I'm even obsessing about little things like a timer! This one is near perfection and comes from Bengt Ek Design.
Just to finish off the black wall I'd might hang these pictures from rädda barnen (save the children sweden). They sell these in their shop in a set of three. The quotes are from tre famous people, for example Oscar Wild.