Selector is right but the green tractor paint was used on Yak 7's.
Rogerdee you green still looks a bit bright but it could just be down to my non colour matched screen.
I think the green you have used is very similar to AII green used early war. for a colour reference thats
Pantone 383
however AII grew darker with age and so became closer to
Pantone 377
The green more applicable would be AMT 4 green for a colour reference thats
Pantone 377 (again)
However we would expect this green to darken still further with use and weathering.
pantone colour reference chart Pantone 377 is a pretty safe bet.
Edit
Some other stuff
Your choice of the Black Bordered star definately puts this aircraft in the early 43 period. Infact I have never seen a picture of an La5FN whout either a white or yellow bordered star. However it is possible that the very first batches of la5FN's did have the black bordered star.
Squadron/regiment codings.
You show white nose and tail fin. Many emblems were shared across regiments i have found white nose and tail as you show for
159IAP (44, 216 & 229IAD)
254IAP (14, 36 & 269IAD)
They could have been used by a regiment of 3GIAD I have no data on any regiment codings for 3GIAD