Let's bring the discussion of neturals, begun here:
N0 More Boring Neutrals! See how the right mix of earth tones can bring warmth and energy to a space.
More on Decorating with Color:Designers' Top Tricks for Picking Paint Colors
You don't like (or are afraid of) color but you want your room to have some kind of pop. Try layering textures in a neutral palette instead of colors and/or patterns: http://www.apartmenttherapy.com/ten-ways-to-add-texture-to-a-room-192901