Most of the homes in my neighborhood, Marsh Creek Country Club, were built in the early 90's. I've noticed a lot roofs in the process of being replaced. I found this article from eHow (awesome site for simple home solutions.)
If you are planning to cover the roof of your house with asphalt shingles, rolled roofing or corrugated metal, you can choose from a limited selection of colors to enhance the beauty of your home in St. Augustine.
Of course, if you live in a deed restricted community, such as Marsh Creek Country Club, your Association will have guidelines for your roofing choices.