Hands for enameled barrel, blued or black?

I need the advice of all you experts. I am going to replace my luminous dial in my Barrel with a enamel dial. I do have the correct arrow hands (see photo, I painted these hands with black enamel) and to my knowledge all the arrow hands came in either gold color or blued from the factory (the original Fluckiger hands are also blued). Did the arrow hands every come from the factory in black. The reason I ask, is that I am a purist when it comes to restoring most things and all the details hav