World War I Holsters with byf Luger

[J. L. Lyon]

I recently acquired a byf 41 Luger. Seller had an officer's belt and holster that he claims came with the pistol when it was acquired by a relative during WW II. The holster was made in 1915. It has been dyed black. Did the German Army put some WW I holsters into service for WW II? Or is this more likely a post war dye job because someone didn't like the brown color?