Wallpaper is back in style with graphic patterns all the rage. If your look is traditional, you may have a small damask type of design repeated. For a more modern look, then a geometric or stylized floral pattern could be attractive. Dining rooms typically are filled with wood furniture, so adding a patterned carpet or pattern on the walls is a welcome addition that softens the room. If wallpaper is not your style, then painting your dining room a darker color that is within your color palette can be dramatic.