Three times the same WNr 501232, three times the same photo, but not the same pattern.
Ullmann
Ullmann in detail
Ullmann 300 dpi
http://www.threewhitemice.com/images...olours_p75.jpg
Smith & Creek
Smith & Creek in detail
Smith & Creek 300 dpi
http://www.threewhitemice.com/images..._Vol4_p822.jpg
Merrick
Merrick in detail
Merrick 300 dpi
http://www.threewhitemice.com/images..._Vol2_p291.jpg
Of course I can understand inconsistency between different photos, even on different sides, but this is the same shot. I'd be extremely surprised if they could have managed a film or even filter change. Besides that would not explain the continued pattern of camouflage.
IMHO either the starboard (right side for the most of us) had an unfinished chequer and some people were creative enough to finish for them on the through retouching or in modern times photoshopping, or the opposite is true and camouflage was added (which doesn't make sense).
Even the photos of the port side look to have a messy pattern, either through having been a rush job, or again some inconsistency - perhaps even post war imagination??
But I am not willing to speculate on the port side, the starboard side is proving to be challenging enough, and I think you will agree with me that pictures say more than a thousand words.
Please understand that I do not want to breach any copyright laws, these scans are purely to illustrate what is proving to be an interesting enigma.