I turned on most of the weathering options, like rubber and brake dust, in the Scapes Photo Mode. It gave a pretty cool battle-worn look. Who else uses those options? Livery is here: https://www.gran-turismo.com/us/gt7/user/mymenu/27e6a9b7-b089-4945-8e57-3e879f710e36/gallery/All/1942