Living room styles changed over the decades of the 20th century, shown in the 1970-era living room pictured here, which has brighter and more vibrant walls that the room from the late 1930s, also pictured.
Here are living room color schemes depicted in Benjamin Moore decorating brochures published between 1930 and 1988. The walls in rooms shown in the various brochures got deeper and brighter as the century progressed. Nevertheless, one bit of advice remained constant. It was: "Don't be afraid to use color on your walls!"