Tooth Colored Filings known as composite, are very commonly done now.  Dr. Ramsay uses the composite to replace old fillings, as well as restoring newly decayed teeth.  These fillings are very strong and durable, and are virtually invisible on your tooth.  Amalgam fillings, also known as Silver Fillings, are now routinely replaced with Composite tooth colored fillings, as they not only look better but are also metal-free.