Accent walls are among the most accessible, affordable updates you can make in an indoor space. It doesn't matter what kind of furniture or flooring you have, and it doesn't require you to clear a whole room or spend a whole day on a ladder. With just one wall and one can of paint, you have the power to pull a whole room together. Of course, that doesn't mean it's impossible to make the wrong choice. When a room feels too big or too boring, four neutral walls don't help — but the wrong accent wall will cheapen the furnishings or make the room feel dark or crowded. To make sure you're putting the right paint in the right place, consider the following criteria.