A very clean looking fighter the D.VI, a great subject. Certainly looking forward to seeing the build. My guess on the colour on the engine cowel, for what it is worth, would be yellow since this colour is very light in black and white photos and it appears slightly darker than the 'obvious' white bits elsewhere on the photo.
Alan.
Hi Alan,
Yes it's the always present problem when looking at orthochromatic film, the most widely available film during the first World War.
Some actual colours are difficult to define, unless they are supported with unquestionable proof.
The representation of colours such as blue, green or yellow could for instance, look like shades of white.
The 'Comic is a good example, where the known blue stripe on the rudder matches what appears to be white markings on the fuselage.
As for the Fokker D.VI I agree that the engine cowl is a darker shade than that of the rudder, which would probably have been the standard white.
Below are representations of actual colours compared to the same but as orthochromatic film.
Using these as a guide, the nearest 'shade' matching the engine cowl in the photograph is yellow.
Here's a shot of a Fokker E.V which was known to have a yellow cowl and fuselage marking.
Lacking any positive proof I'd agree with you, that the cowl was most likely a shade of yellow,
Mike