Have any of you guys used Blue Mountain imitation flagstone? I met with a customer today at one of my vendor's. She was going to choose between Nava stone and natural flagstone. However, she saw a display for the Blue Mountain imitation flagstone and she loved it. It looks nice and is rated at 9000psi, but I'm curious how it holds color over time. BTW, what is up with this weather? Two days ago, I was doing estimates in a T-shirt. Now, I just got in from salting/plowing.