This was DB’s introductory film for the w113 model. These films were made well in advance of the actual release. I would, therefore, imagine that prototype cars were used for the filming and hence the departures that you’ve summarized. I do believe however that on their release, the door pulls, window crank pads and ashtray lid were only available in black. At some point in the run of the type 230 cars, color coordinated parts were adopted. If I’m incorrect on this, please let me know.