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
Attic Bedroom Closet Design, Pictures, Remodel, Decor and Ideas - page 9 - sublime-decor. I have the perfect wall (with attic behind it) to do this. I've often thought of making an easily accessible closet there.