The trouble is most people don't know their neutrals. They're stuck on the idea that everything goes with black but everything else is limited. But neutrals include grey, beige, brown and even some colors such as navy, burgundy, aubergine, and moss. (One of my personal favorite neutrals is dark teal.) Not only are those colors great to mix and match, but you can pair them with anything!
Most paint companies promote painting a room a neutral color; then you don't have to worry about your walls clashing with the yellow flowers in your wedding portrait, the aqua vase you picked up in Seattle, and the colorful blanket your grandmother made you. The room on the right (and the outfit up top), for example, is almost entirely neutral colors save the pink and lilac. If you're still confused about color, go to the hardware store for paint samples and room ideas. What they've put together, you can try with your closet.
What are your favorite neutrals?