To give a modern bedroom a warm and cozy look, designers Jamie Hamilton and Greer Nelson of Oliver Simon Design created a feature wall with a hexagon-patterned wallpaper from Cole & Sons, in a soft taupe colorway. "Wallpaper isn’t as easy to change as, say, a throw pillow or even bedding, so keeping it neutral in color is a good way to make sure it stands the test of time," advises Hamilton.