this was a hard one, used the joachim klang building method, which is still very new to me, i figured out how to make call of duty desert camouflage bricks buy using khaki tan spray paint, then using lots of water with black and brown and letting the colors run down the bricks, then spraying the bricks with air(computer parts cleaner air spray) and the colors evaporate on the bricks, leaving behind perfecy derert camo. see if u can spot the real call of duty bricks from the painted ones.