White curtains can be used in any home in your house to create a light and airy feeling. When you choose a light color, sunlight is still able to enter the room although it is somewhat filtered. If your goal is to keep out the sunlight, then you should choose curtains in a darker color with a good lining. A disadvantage of white curtains or any light color curtains is that they will more easily show dirt or dust. Keep these clean by regularly vacuuming and washing.