Paging Ju52 camouflage experts: what colors were the cowling stripes on

[richard]

KGzbV 7's Ju 52s in late 1942/early 1943? That outfit handed over their planes to KGrzbV Wittstock in February 1942, and Wittstock kept both the fuselage code and the cowlingstripes.(one of the Revell decal schemes is for a Wittstock machine in that guise).
I found fotos in:
Kössler, "Transporter - wer kennt sie schon", p.68
Piekalkiewicz "Stalingrad" p. 421 (left cowl only, stripes all round)
Smith & Gallaspy "Luftw. Camo + Markings Vol.2" p.55 (artwork only, black & white stripes)
I know it is an esoteric subject, but my dad flew out of Stalingrad in a Ju52, so I would appreciate your input.
TiA, Richard