Albatros W4 naval hex orientation

[berman]

The Windsock mini datafile on the Albatros W4 states that 15cm measured flat to flat printed hex fabric was applied chordwise to the wings. However, a clear photo of W4 serial number 959 being salvaged on Rosebud Early Aeroplane website clearly shows 30cm hexes in a spanwise orientation (2,1,3,2,1,3). The photo in the datafile, on page 12, clearly displays 30cm hexes on a horizontal stabilizer. The finish on this stabilizer appears too saturated to be printed fabric and therefore must have been painted. Does anyone else have photos of other W4's showing that spanwise 30cm painted hexes were the standard practice on W4 wings?
On page 10 of the W4 datafile is a photo of two Friedrichshafen FF 33l aircraft. Both feature 30cm hexes in a spanwise orientation. I believe that this photo was taken on panchromatic film because W4 serial 911, in the background had Kaiserliche Marine cockades on its fuselage and the center red circle is a grey tone instead of the normal black associated with orthochromatic film. Given that panchromatc film is sensitive to all colors, would it be possible to determine if the Friedrichshafen hexes were painted the earlier mid blue, light blue, blue grey combination or the later grey brown, grey violet, grey blue scheme if the original photo print was closely examined?? I know that the late Dan San Abbott insisted that there was only the grey brown,grey violet, grey blue type but has any new evidence come to light proving the existence of the earlier blue combination? Could the painted 30cm hexes be the earlier blue combination??