I believe that the colour-scheme I suggested is historically accurate.
I had no intention of creating some 'pick 'n mix' skin
The colour-scheme sheet that was included with my Hasegawa model kit, which are supposed to be the correct colours for the 109 K4 of JG 52 designated
W.Nr 332529 in May 1945 are as follows:
RLM 75 and RLM 83 with a base/under-side RLM 76
This is why I linked that wall-paper as it shows this roughly.
This is an incredibly small image, but this is what I am referring to.

As far as I know, Hasegawa are usually pretty good with their markings directions and this is what led me to believe that the Nraven skin was a winter version of the above.
I assumed (perhaps incorrectly) that the Luftwaffe did something similar to what they did with the water-soluable winter paint for the Stukas.
-Example Here-