If you're replacing your roof shingles, choosing the right color to match or contrast with your home's siding and shutter can result in a beautiful exterior decor and promote greater energy efficiency. The main purpose of asphalt shingles is to provide a watertight, wind-resistant seal that protects your roof from rain, wind, snow, and ice damage. But, a secondary purpose of home beautification can add to the style and personality of your proper for many years to come.