Just as an addendum to Mike's post below.
This is style I have chosen for the bases my FJ on.
I am wanting to go for a more Mediterranean colour than a pure Italy one. Mostly so I can use them for Crete aswell and at a pinch North Africa (all roughly similar) .
I have tried to go for colours that represent Limestone and Pumice. I have also tried to use Photo's from a family trip to Italy years ago to choose the right tones.
Please excuse the photo quality.
The White stones are meant to be strewn pieces of rubble, but I think I may just paint them as rocks...