After seval trials and errors...I have settled with this for marine digital. Bluff Tan..medium grey and nato brown with some lighter brown thrown in. I start with prime..then pain the med. grey. After it dries I take the deck tan and start making small tetris (the game from nintendo back in the day) designs. Then I go back with the brown since the Marine is a little different than Army. I trace some of the shapes with the brown. I'll take a pic soon to show, but so, all the pics I have gathered is that the middle shade (grey) usually looks khaki to smokeish in color when in combat. Khaki i've tried and just can't get the ride shade of it, so I found the medium grey in the tayamia paints. I think other's call it coyote, but whatever, it hasa worked for me.