My contractor took it upon himself to put an ugly concrete sidewalk that looks like something one would find at a Motel 6 all the way around my new home in Sanibel, Florida. It would cost a fortune to jackhammer it out. Any ideas? I had wanted crushed shells all around the house. The sidewalk is underneath a deck that wraps around the 2nd floor of the house. Is it possible to put a thin coat of concrete on top with decorative shells?