Maybe this is similar to what you saw:
As others have stated, German uniform colors varied from factory to factory throughout the war. Uniform styles also changed during the war. Changes in fabric composition, dyes, dyeing techniques, wear and tear can all alter a uniform's appearance. Service trousers were manufactured from stone gray (
Steingrau) cloth until 1940, thereafter they were cut from the basic field-gray cloth. Pre-war to early war tunics were of a grayer shade, later superseded by greener tones of field-gray. There is also the model 1940 reed-green drill uniform and model 1943 reed-green summer field service uniform which varied in color from sea-green to light gray. A good book on German uniforms is:
German Army Uniforms of World War II in Color Photographs by Wade Krawczyk, published by Motorbooks International, ISBN: 0-7603-0249-9