Beautiful windows can be highlighted with an accent wall. In interior decorating, a wall that is painted a different color or has a different covering from the rest of the walls is known as an accent wall. While there are many ways to create an accent wall, one of the most common methods is to paint a single wall a darker color than the others. While you can potentially put an accent wall anywhere, some walls will have a greater visual impact than others, and sometimes an accent wall can even correct a flaw in a room.