This is the original TV show Addams Family, of course - the movies and subsequent shows were in color.
The opening credits, set in the living room:
Reasons for the colorful set? Because the original Addams Family was filmed in black and white, the colors for some of the items simply didn’t matter – if they found an object that looked just right for the set but was colored baby blue, they could still use it. Another reason was the way that black-and-white film registers certain colors when shooting. In other black-and-white films, characters often had to wear strange shades of lipstick (like brown or green) to get the right shades to appear on black-and-white film. As such, many of the color choices on this strangely colorful Addams family set were probably deliberate.
Via Bored Panda.