Tail cone went fine. Perhaps the detail is a bit too heavy, but I wanted something in the to show in the tail. (I post pics later)
I started diggin' a bit deeper in the mystirious colours of the Ki-67.
I came to the conclusion that most of them were indeed Dark green over grey. So far so good.
The Hamamatsu Ki-67 with the strange squigle seamed to be a "prototype" or "pre production aircraft" of some sort. (accourding to 'Army type 4 Heavy Bomber Hiryu (Ki-67 Peggy)', Famous Airplanes of the World No.98, Bunrindo Co.) Hasegawa does not mention any of this in their special edition of this particular Ki-67. So, perhaps to much guess work here.
So, back to the Green over grey Ki-67. As Wojtek so kindly explained, the nose is entirely green arround the glass. This particular green paint (sometimes described as "olive drabb" or "Brown drabb") was a paint that originally was of a dark green shade that rather quickly darkened to a brown-ish hue.
Another intersting fact is that parts of the Ki-67 were manufactured at different plants, making the tail section (aft of the turret) apear as a darker green colour. The undersides were sometimes left unpainted on later production models.
So, to cut this storry short. I "think" I'm gonna go with a less exotic camo scheme. There is one particular Ki-67 bomber that caught my intrest. A machine from "170th Bakugekitai (170th Bomber brigade)"
Kengun Airfield, Kumamoto Prefecture, August 13th, 1945. The 170th Bakugekitai is one of the Bomber brigade which combined the 60th sentai and the 110th sentai. The 60th sentai and the 110th sentai were abolished after the 170th bakugekitai was organized. Most machines of this unit carried the white tail, which was the chosen unit insignia. However, others carried the 'last three' of the aircraft construction number on a camouflaged tail, which was continuation of the practice of 110 Sentai, from which this unit was partially formed. 170th Bakugekitai was one of the few Peggy units to use outlined fuselage hinomaru.
This one might be what I'm looking for. I also means I don't have to use any decals and might get away with simple masks for the Hinomaru. This way I don't have to fear for the Sanger decals (which seam to have a notebly bad rep)