Faux tin tiles from Lowe's or Home Depot sprayed with coordinating colors for a cheap accent wall. I love the idea of this as both an accent wall or as a ceiling in a turn-of-the-last century room that originally had tin or brass tile ceilings.
possible bedroom color: Benjamin Moore Palladian. said to be the most beautiful color as it changes with the angle of the light all day long. It is peaceful, flattering and not pastel. Its a grayed down, robin's egg blue.