2000 MGM Ragtop

I have a 2000 MGM rag top.
Today in the parking garage someone literally ripped off the plastic piece from the door that makes the roof and top of my door match.
This is the plastic piece on the top of the door, that is covered with the same material as the roof.

Can someone tell me what is the name of the plastic piece from the door?
I need to find a replacement for it.
Thanks

I have a 2000 GM w/ a vinyl top and I believe the top is a module that is installed as a unit and only a dealer would know if that part of the module can be replaced, Good luck.