[lugerholsterrepair]

Mike, Many holsters were dyed black during the WW2 era to comply with a German Army High command directive. Some were not affected, Police, special units or Luftwaffe perhaps. The Army was the Army and did not necessarily overlap into other services.
Remember, holsters are sort of naturally brown leather before any dye is applied. When this rubs off over the years it can leave a very pleasant brown color on the high spots. This is a patina and I would not change it unless more severe factors dictated it. Jerry Burney