Hans concluded:
"If the white stag comes from a coat-of-arms than 'white' could be also painted as silver, as 'white' is the subsitute for the silver 'metal'."
Weisser Hirsch, which of course means "white stag" (or "deer"), still exists as a suburb of Dresden, and wouldn't you know it, they have a Web site,
http://www.dresden-weisser-hirsch.de/index.html,
where, even less surprisingly, one discovers the emblem of the displaying (rutting?)stag is used as the town logo. On the Geschichte page, one will find a version of the emblem in the upper left corner of the map from the 15th century. The use of a darker color (black) to distinguish and emphasize the antlers seems to be part of traditional use.
Given that the reference is to a town name that in turn refers to a rare (and perhaps magical) phenomenon of nature--the albino stag--I do not think that this emblem has an heraldic heritage. To me, this suggests that heraldic "argent" is less likely as the appropriate color, and the forms of the few images available on the Web site are consistent with this conclusion.
Of course, all this speculation may be moot if the currently suggested colors are from Degelow, who survived the war to write a book *With the White Stag Through Thick and Thin* and long enough to have been interviewed about his aircraft. Does anyone know? Even in the absence of his own reports, there is nothing to say that Degelow couldn't have altered the emblem to suit his own tastes.
Regards,
Stef
BTW, Hans, since you seem to be a modeler have you considered joining the World War I Modeling Page mailing List?