I've finally completed the upper surfaces by applying a "Black-Green" filter as referred to in the Wingnut Wings Booklet. Before I forget thank you for your earlier comments Richard. I tried a test piece using a blue filter and determined the greenish variety looked to my eye more like the sample examined and photographed by Canadian Historical Researcher Alexander Comber and pictured in the Kit's Instruction booklet as well. I'm the first to admit that the sample has no doubt been altered by the effects of aging, it's 100 years old after all!
The filter I used was a very thin mixture of Tamiya X-20A Thinner with a few drops of their XF-27 Black-Green and a few more of their Semi Gloss Black. The wash was misted on in 3 sessions until I was happy with the effect. The photos, all in Macro Mode, show the underlying lozenge more clearly then the real thing. Overall I'm very happy with the results. The Model is slightly lighter then the actual restored aircraft as seen in the Museum however I wanted to ensure the Aviattic Lozenge pattern was still apparent. I'm extremely happy with the results of deciding to go with the Aviattic Decals and a filter in lieu of the Kit decals.
These two photos show the upper wing center section with the right side misted with the filter and the left in the original untouched Aviattic Night Lozenge, upper pattern, clear backing on gloss white wing. The first with just an all X-27 misting, the second with the S/G Black added to the filter.

and the final version:

..... and here's a few of the fuselage:



Next I hope to complete the undersides and then it will get a few coats of future to seal it and prepare for application of the markings. I should mention that I had to remove and replace the right forward side panel of lozenge as some creases that I hadn't noticed earlier become very obvious and ugly due to some color wearing off with all the handling. That went extremely well and "I heaved an enormous sigh of relief and forged on"!
It's a very slow Build however so far all's going well.
Cheers,
Lance