Came home to find the rock wall completed...but the rock that is in the center of the lineup is not the same color as the others! I talked to the contractor, he said there are some naturally-occurring variations but I told him I was not happy and wanted a change. He's coming back out on Monday to see what can be done. Honestly, you would have thought that when they laid the rock, they would have noticed how different it was. More to come.
Stone Masons are well aware of the variations so the burden is on them. Wonder if he would be pleased it this type of work done if it was his wall. Post a photo on his website with a complaint.