Dave:
I was way off base on the paint - went back to notes I made:
"The basic wood superstructure was painted using Rust-Oleum Satin Fossil . Edge details were painted with Rust-Oleum Dark Brown. Once the paint dried I used Micro Mark Railroad Tie and Bridge stain - gray/ brown to darken the color.
The Korber structure was painted with Rust-Oleum Flat Brown then oversprayed with Rust-Oleum Flat Red to give a mottled appearance. Krylon Satin River Rock was sprayed over the stone base."
I did forget to lightly sand after the steel brush which is why you see some 'dark' spots.