I hired a contractor for a new roof. He replaced the roof on my neighbor's house 4 months ago. When we agreed on the price I specificaly indicated to him that I want the same color roof that my neighbor has. I was out of town for a few days when he started to work on my roof. Then I came back home, 3 out of 4 sites of the roof were finished but the color was not the color that I was asking for - it was much darker olmost blackish. We are very unhapy with tis color. What options do we have at this point? Appreciate your advise.