Wow there are so many great ideas to try! Its going to take some time for me to experiment around to see if I can find something suitable. I tried a couple of procedural mixtures  I really did not know what I was doing and it shows it. Here is what I got when I tried the BB mat file I don't have VSS so I just plugged it in. Kinda looks like some kind of camaflouge... not exactly what I wanted. If I knew what I was doing maybe I could fix it.I have many more suggestions to try and I am always willing to experiment so keep the suggestions coming.