Sorry, you are incorrect. The Freightliner is different, but the Dodge does have the trim piece. I know this because I look at my van, and see that it is missing.... I also called the dealer and they can get the trim, but it is unpainted. I was hoping someone had a white one in the parts bin.
Buy a can of spray appliance paint at Home depot. When I purchased my van, those parts were sandblasted by the miles of desert driving. I used that paint and you can't tell.