Questions on port installed accessories

I have a couple of questions regarding the optional rear diffuser for the M235i:

1. My dealership says that this rear diffuser is carbon fiber. This is contrary to all the information I've gathered including from the BMWUSA site. The only rear diffuser offered by BMW for the M235i is the polyurethane one on the BMWUSA site correct?

2. Can the VPC paint the rear diffuser prior to install at port?

Thanks in advance.

Questions on port installed accessories