When I restored my No 11 cab Chevrolet , I found that the inside off the body , and cab always stayed olive drab through its life , even in civy use , the outside had under the civy color a brown black camo applied (wheel arches , and underside where also not resprayed )., so that is how I restored her , but I got during the years the odd remark , and did you not have enough Brown paint ? What can you answer then .