Ok. Tonight I had a few hours to spare so started the Forge World Strongpoint tile. When I did my desert board I purchased the GW Scenery flock and paint set. The brown is the standard earth brown they use.
It was then heavily drybrushed with the Ochre from the set.
Next will be the stonework and metal work and it should be done. Great stuff. A nice and quick one by the looks of things.