What could be the story

My Dart is white with a green interior. There is green showing under the white on the doors, for sure, where some chips are. I think they painted the entire door the interior color earlier in the line, and then final body color at the end. That way the interiors can all be done in a batch for a specific color but still be tailored to the final car color without having to keep track of 'specific' doors.

E.g. Blue interior got a blue door, no matter what the final color was, because it's done later