Pacifc's OEM matt chrome handbrake grip and manual gear lever knob DO match the aluminum trim. I have both, as well as the OEM aluminum pedals for my 328Ci (against black interior). The Rob Knob shift knob and handbrake grip seems like it would also match the aluminum trim. Let me know if you need the part number for the matt chrome manual shift knob.
You can find the Rob Knob stuff thru UUC Motorwerks. Here's the URL: http://www.shortshifter.com/uuc_motorwerks_shift_knob.htm