I have been meaning to buy a model of that. It seems to me that Hasegawa usually do fairly accurate research on their markings.
They have a 1/32 kit of a G-14 with image:

I'd say that Krusty is right about it being Hartmann's and the paint not being accurate. A quick look around yeilded this discussion:
I'm pre-painting the 109 with RLM74/75/76 and will then add a light, slightly worn whitewash over it. My question pertains to the yellow identification colors painted on the lower cowling and radiator cover. I've seen in profiles of his G-6 (without the whitewash) that he did not have yellow painted on the lower cowling, although the Hasegawa kit instructions call for the yellow identification markings to be painted on his G-14.
Spinner and front panal are in white, with the 8 black tulup cheverons. The lower cowling is yellow, and there is a yellow cheveron under the starbord wing. The yellow band behind the fusalage cross is shown only covering the front half of the panel. That cross is filled with the darker of the fuslage colors. i am assuming the wing cheveron is repeated in the top of the port wing as per luftwaffe regulations. Hope this helps clear up your question a little bit.
(BTW the lower cowl was not completly yellow. Just a band of yellow which went around the area of the oil cooler.)
The most controversial of which is the RLM62 overall upper coat used in a lot of the early D aircraft before they started experimenting with the splinter camo schemes.
these quotes were taken from:
-here- These guys seemed to know what they were talking about and had some decent references.
I hope this helps, as that would be a great skin.
