Mindphaser,
this captured Nieuport 11 (Ni.1615) was covered with clear doped linen, nor the Italian green nor the red can be seen on this photo in Luftfahrtruppe markings. The crosses were added to the bottom of the wings as well.
photo from: "Fejezetek a magyar katonai repülés történetéből" (ISBN 963 10 695 9)
Nieuport11_00.27_resize.jpg
regards, Peter