White walls. We love paint and wallpaper, but you can achieve a colorful room with plain white walls. And if you're a renter, you might have to. These two rooms show us how, even with the whitest of walls, one can still have a room resplendent with color. Bold, beautiful accessories in the form of carpeting, textiles and artwork add depth and texture to the rooms. Striking blasts of color can come from the furniture as well.