Weathered
Hi,
that weathered truck is painted on the out side. I use a product called RUSTALL. Comes with rust, blackwash, dead flat, and dust. Type RUSTALL into google, it's easy to find and comes with easy to use directions.
I mask off the windows on the inside and paint the body on the inside a dark brown and seal it with faskote sealer. Then mask off the windows on the out side and spray the on the main body color. Next use the components of RUSTALL on the out side of the body. For the windows, I remove the masks and spray on Faskolor Tan and take a "Q' tip and dip it into rubbing alochol and wipe away as much as you want to get the dirty windows. (you can do this technique on the outside or inside of the windows.
enjoy
caci