Solids are one of the few types of wallcoverings that are considered for every room. If nothing else, they give you an idea of the color you want and what is most likely to help bring the room together. Solids can make a room feel less cluttered and can make a small room seem a bit larger. They can also go a long way toward toning down rooms that receive a lot of light and brightening rooms that are otherwise very gloomy.