Louvered doors allow the air to flow between rooms, or a room and closet, while the door is closed. For those who do not like the look of a louvered door but still have need of it, there are some simple strategies to cover it--to either hide it entirely from view or to enhance its appearance.
Hiding the Doors
Consider adding a curtain over the door. Curtains can be attached via rods at the top and the bottom of the doors, but use a loose-weave fabric, one that will allow the air to flow through. Consider using lace. Or if the door is to a closet and the room is spacious enough, consider a standing screen. Perhaps a black, lacquered screen would fit the room's decor, a carved wooden one or a more modern, metal screen. There are even screens made to hold photographs if such a display would add to the room's appearance.
Beautifying the Doors
Perhaps the doors simply need to be sanded down and re-stained a more suitable colour. Or paint them, making them whatever colour would enhance the room's design. If you are artistic, you could paint designs (something as simple as lines or flowers) or an image across the louvres to make them more appealing.
Decorating the Doors
Decorate the doors to give them personality. Weave the ribbon in and out through the slats, attaching them to the inside of the door with a staple gun. Or perhaps use ribbons the same width as the louvered slats and glue the ribbons horizontally across each slat, covering the wood with fabric. Consider a colour pattern that is meaningful, such as your school colours. Or decorate the doors by weaving thin floral, silk garlands through the slats along the edges, framing the door.