Nice one. Probably as per you because of your handle, I do like to be different.
Basically, I don't know if any were chrome, it was just it appeared so before I determined it was stainless. I also theorise that when the later Roadster came out they sprayed/coated them black trather than paint a mild steel one. Also if you look on the Triumph website the stainless ones are £85 and the black ones £90 (£5 for coating it black)