I have the stainless/chrome wipers on my coupe. It had satin wipers originally.
A local independent BMW shop owner (a friend and now retired) accidentally set his beautiful fjord csi on fire - gas vapors in the trunk. It got so hot it warped all body panels from the A pillars back. Everything forward of that was still perfect including his punched out 3.5 and 5 speed (he bought the trans new from BMW and only had 5K miles on it). He offered the whole thing to me for 6K. Looking back I should have jumped on it but we were in the middle of a remodel and I couldn't swing it. I did manage to get the full 5 speed including the driveshaft, the cool city light headlights, and the perfect stainless/chrome wiper arms. All are now on/in my coupe. Like an organ donor, he's beautiful and beloved coupe still lives on in a small way.
I had satin black originally and chromed them.