Thank you, Roberto.
The photo I used is in Greg VanWyngarden's "Richthofen's Circus," but I suspect it is the same one you reference. It's behind Kraut's Fokker D.Vii in the photo. It's really hard to make out the cross fields, but I am also going by Dr. Merrill's comments in the Americal decal brochure and all the other captured allied machines I've seen. The cockades must have been painted over and white is the logical choice. It's possible the fuselage crosses had no background but I don't know if this machine originally had a number there and it makes sense to use a white background for consistency. As far as I know there is no photo of the underside but other machines had the "Gute Leute" on the lower wings to identify the machines to ground troops and lower flying planes.
Drew
