Do ceiling & walls the same color. You have to consider wall color, architecture, light, and mood. Here are some basic guidelines for selecting an effective ceiling paint color, and some inspiring image
smart design of an attic bedroom. wainscoting halfway up the wall, then the remainder is painted black and downplays all the crazy angles. I don't want black but could use the idea of a color on the upper walls and ceiling.
I absolutely love this set up and storage Family bonus room with slanted ceiling. Custom built ins and daybed create a great place to hang out with the kids and comfortable space for an overnight guest.