I'll also look into buying a standard Black set and bead blasting the arms and coating in a clear satin. Hmmmn. If it works, I'll go into production.
Suppose you are referring to the actual Bosch black wiper blade metal frame and not the oem black wiper arm set.
Ok, here is one more photo I have of the wiper in question. It might need some zooming. Says Germany on it and has a discreet Logo. Does this one ring a bell with anyone?