Re-Decorating

It has been 2 years since I decorated my house. And I have an urge to redecorate again. I really want to paint my bedroom a deep rich chocolate brown. I would like to do all four walls this color and do the ceiling an off white, with orange and white accents (lamps, curtains, vases) but I am very scared to do that because I don't want the room to look too small and I have dark furniture. So... I think I will do the wall to the north brown, then the wall to the west brown, and do the east wall, the south wall, and the ceiling a sage green or a gray, silvery blue. Then do white accents. I also want to paint the cabinets in my bathroom a deep rich brown, and do the bathroom the same color as the colorful wall with brown accents. Might be a little too matchy matchy? I am off to Ikea tonight to see what I can find in the way off accents, then I will pick paint colors. Very excited!