Hi Otto,
here is a difficult question. I have an answer only for the side panels: the ones preserved in Finland are light blue-green; of course this don't necessarily mean that them all were in the same way, but I would conform to this in absence of any other different example.
About A-14: being an usual paint for cockpits, I think it should be show on the most of the surfaces. If there is not any trace on known pieces, I think it was not used in this case.
About the seat: I've received a photo of what seems a wreck of seat from a MiG-3, that is painted light gloss green. It's the color one could expect from a glycol tank. Haven't I already shown it?
Regards
Massimo