Well, this aircraft (as all other Yu aircraft from this period) seems to have same grey blue colour above and same very light blue green (almost turqoise) variant under (I really do not know exact names of this colours

). Same is on Me Bf109G-2, and also on Sturmovik, Hawker, Ikarus, Texan,... that I could photo soon.(

) In fact it's not some special camo but it is like it is.
I'm happy if these photo's will be of some help.
Very good idea.

I almost forgot, here is few last shots, and you can see that sunlight is changeing the color on photo, so You mast take informations of colour on some photo's with care. There is no change of color it is different light on airplane (shadoww and sun -because of this glass wall construction in museum). Look how wing looks brown on phot.5. In fact the colour is grey blue like on phot.6. Sun is colouring it more yellow. Caution!
