I am weathering some trailer on flat cars. One area that truly needs weathering is the flat car decks. On the Athearn blue box kits the decks are the same color as the rest of the car as shown below: Since they look very out of place this way I decided to weather them. I will be using Folk Art acrylic paints. First I brush paint the decks with unthinned Barnyard Gray. Next I drybrushed Burnt Umber. I brushed in the direction of the wood grain.