"Midway" production went WAAAAYYYYY overbudget and time, thanks partly to the extra costs of Sensurround audio. This was also in the period after the tax man hit MGM with a huge bill for their stock of such things as military vehicles, so they were sold off -- thus no longer available for lease, but the wranglers hadn't gotten their act together, so the company was tracking down individual owners. The guy who owned this probably bought it from MGM, and they were slathering WATERCOLOR paint on them. No doubt he didn't want to put holes for the antenna mount on it. If this is the one I think it is, it made a few other appearances in film and TV production, in its true OD paint.