Lay an accent rug into the center of the room. Choose a rug that incorporates the brown from the walls or furniture and also features more striking colors that can be used as an inspiration for the room.
Cover the furniture with accent pillows. Use colors found in the area rug to draw attention to the sofa and chairs. Line larger pillows along the back of the couch and scatter smaller pillows against them.
Hang bright artwork on the walls. Brown allows you to use almost any color in the room, so choose prints and paintings that feature bold, vibrant colors that stand out even more against the neutral backdrop.
Incorporate new pieces of furniture into the room that feature a vibrant color or bold print. For instance, place a brightly colored coffee table or ottoman on top of a throw rug. Reupholster an existing chair with fabric that complements your new artwork or throw pillows.
Paint one accent wall a deeper shade of brown. For instance, if the walls are beige, cover one wall with chocolate brown paint or wallpaper. Maintain a brown, neutral base by choosing stripped or monotone wallpaper.