You know that empty room, or the one with all white walls and not much variety? What about that hallway that you want to add some character to but you have no idea how. One way to spice up a room is to add color to room itself. You can choose to paint one or two walls differently. This adds variety and interest to the entire room and makes it seem completely different..
Blues, purples and green tend to create a calm, relaxing and comfort.
Another way to use that paint is to paint the ceiling and not the walls. Bright colors can also make the ceiling seem taller and more open.