I just noticed this thread, and as it is on a subject I have great interest in, I thought I might chime in....Far be it from me to offer an opinion at odds with those of more expertise than my amateurish view, but I recall an interchange between Dan San
and Ronny of WNW re: color interpretation some 20+ years back in the Aerodrome. He noted that in monochromatic film the
green was always dark, as were red and yellow. It turns out that his advice was ignored and the green and mauve/lilac colors
we're reversed in WNW's illustrations. That said, I believe the rudder color of the photo in question could be green, but I posit that as the wheel covers have a similar shade, both might be red. As for the camouflage pattern, OAW tended to alternate the green and lilac on the wings, like the D.V, unlike the other Johann. D.IIIs, which tended, so not an absolute, to have the colors on both wings to match. I believe the upper wing extremities to be green, but due to reflection, it isn't obvious. Re: Krampus,
his horns might be a yellow or ochre, in contrast to what we expect to be a red tongue.
But hey, what do I know? I'm just another who stares at the pictures....
Cheerio!
Jim