love love loooove this. thinking about a soft purpley-gray for most of my bedroom walls and using this pretty dark purple as an accent wall. really love darker purple but its too dark to do all the walls!
Never really gave this much thought before but this IS a very good way of narrowing down to a finished color scheme "BEFORE" you go & buy the paint. Very often we have something in a room or that we would like to put in a room that can help us to choose the colors for that room. In this case this picture set the overall mood & guide to the color scheme. A very good approach I think ;)