What colour window wiper arms?

[DYNG]

Hi all
My '71 left the factory as a kombi. Should it have black or silver wiper arms? Matt or shiny?? Details, details, details....

 

[sparkywig]

1968 - 72MY have silver wiper arms, 1973 - 79MY have black wiper arms.
In both cases it was a satin/matt finish.