Oh I have checked out dozens of sites, many with conflicting information, some just plain wrong. The unfortunate thing with photos, albeit they are the best source of info, is that most are black and white or the hues in the coloured ones are incorrect due to chemical weaknesses in early emulsions. I have now established, to my own satisfaction anyway, 1Sqn had no roundels on the under-surfaces while sporting B&W under-surfaces, but did have a thin yellow line around the fuselage one. As there doesn't seem to be a way of getting all of the elements together in IL-2, apart from producing a dedicated skin for each aircraft, I will swallow my ire and carry on building my campaign with what I have.
Your input was very much appreciated RDDR, but I will take you up on a couple of things.
i) The paintwork was originally applied in aircraft factories to strict Air Ministry specifications, and this includes the tail flash and roundels. The Dark Earth and Forest Green were also applied to an Air Ministry pattern, Type 'A' and Type 'B'. (one being the mirror image of the other) These patterns were put on using pre-cut rubber masks so that a mirror pattern was painted on alternate aircraft. The 'in the field' change to duck-egg blue in June 1940 was an exception.
ii) Although there was a perceived lack of pilots, over a thousand were doing desk jobs or considered too old or to high ranking; but they were there if needed and a list was drawn up! However this was a serious constraint for Fighter Command of that there is no doubt.
iii) Fighter aircraft production was outstripping the attrition during 1940, and afterwards too, the bulk of the production going to new squadrons being formed. Factory fresh aircraft were available within 24/48 hours to the front line squadrons and delivered mainly by women I believe. The figures quoted for single seater front line fighters are:-
June 1940. Production 1163
July 1940. Production 1110
August 1940 Production 1087
September 1940 Production 908
October 1940 Production 917
So while I will concede that damaged aircraft patched up at the airfields may have had the odd rough paint job, I think most would have, more or less, conformed to Air Ministry patterns.
There is a super amateur film of Czech Spits on Youtube, and despite my observations above you can clearly see how battered the aircraft can become in daily use. it is in 2 parts, part 1 is here :
For all that we make a game of this, my heart bleeds for the brave young men who flew these machines day in day out, never knowing if they would come back.