To restore your coloring to your concrete patio simply wash your patio with a 8:1 ratio solution of muratic acid to act as a catalyst. mix the desired color (powder release form)with clear liquid release and apply it over your stamped concrete patio with a roller and brush. Let this dry completely and then apply an acrylic sealer such as Master-Seal by Dupont which also provides a non-skid additive. Apply 2-3 coats of this resin seal should be applied (6) hours between coats....

Your Patio should look as good as new!

For detailed information, products and services including color charts, online videos, techniques and an online Decorative Concrete Forum a comprehensive resource would be http://www.concreteforever.com