What could be the story

For a special ordered car is it possible they would have started painting it then switched colors? My 69 dart has a fender tag that says it’s B7 (blue) but behind the rear door panels I see green overspray. I’ve uncovered green in the quarter panels as well. The rest of the interior is blue. I know it’s been 55 years so I suppose anything is possible. Just curious what the story could be. I guess it’s possible it was in a really bad accident and the whole back half of car was replaced but that seems like it would have just been junked…