We are having a new front walkway and steps put down at our house. We were very particular in picking out the color of the pavers because we wanted it to blend very well with our old brick house. The sample bricks that were brought to us ended up being a lot different in color than what has started to be put down. Is it normal for there to be a variation in colors of pavers from the same company? I am pretty sure they are Unilock pavers.