A contractor did a lousy job of my coloured concrete walkways. I had ordered velvet brown . The colour ended up pink. I complained and by the time he finally came to fix it , he quickly rolled a painted colour on before I could get home and see it. I did not ask for "painted" concrete. It's been fading, chipping, and looks terrible. I have contacted the contractor and he finally agreed to come and try to fix the problem again but never did show up. That was a year ago. Unfortunately there was no contract. Any suggestions of how to make it look better?