A professional chimney sweep may one day inform you that yourfirebox needs repair, which will require action; it is unsafe to use the fireplace without a sound firebox. The seemingly bad news could be an opportunity for you to give your fireplace a pleasing makeover. Or you could give the fireplace a revitalized look simply because you think it needs one.
You can create a whole new look for the walls of your firebox in a variety of ways, such as:
Use a more modern style of brick
Have the bricks installed in a herringbone pattern
Install a design in which thin strips of firebrick are vertically placed, with a thin horizontal strip in between
Choose bricks which create a dramatic effective, such as black bricks in a geometrical design