Interesting. Tried to find pics of this plane before but it was like searching for holly grail (everybody know it is supposed to exist but nobody really belives it).
Ex. Yugoslav SM 79 that escaped to SSSR after capitulation of Royal Yugoslav armed forces in april 1941. According to comments it was used in 69.IAP and was crashed during evacuation of Odessa
Где-то пробегала информация , что в 1941 г в 69 ИАПе эксплуатировался перелетевший к нам весной югославский горбун.
Camo seems a bit faded standard italian 3 colour mottle that was also used on all Yugoslav "Humpbacks" (SIAI used Verde Mimetico 1, Giallo Mimetico 3 and Marrone Mimetico 3 and for undersurfaces Grigio Mimetico) with soviet hand made repaints of probably dark green of some sorts or thinly apllied black:
http://aviaforum.ru/showthread.php?t=11112&page=43NOTE:
On Italian ww2 colours this is THE source:
http://www.stormomagazine.com/RegiaAeronauticaColorsinWWII_3a.htm