Ah, sorry to be late in this topic.
About the colours: Forget the tank colours proposed by battlefront - theyr not totally wrong, but they are quite, well, "something like that`ish". Of course there aint many surviving examples of that three tone camo, as it was pushed out from service soon after the world war 2, thou it did survive in some ATG and artillery pieces as the main re-paint did happen in the armored brigade (to be noted, it wasnt ordered to be applied in any other vehicle/gun than armored vehicles, but again, it happened), so in some
AT and artillery units the camouflaged gunpieces did serve in the very end of their service career. Of course, there is no absolute "correct" colours, but the battlefronts colour scheme is way too bright. I would suggest you to use
dedicated lifecolours paint set, its available from most well-equipped scale model (and lifecolour) retailers and isnt very expensive, around 20€uros (around 25$ and 16£) and the colours are quite right.
About the winter war: Im not sure where the rumours started, but my friends friend (or acctually his mothers cousins dog) told me that
EW is on the pipeline to come, but rumour is a rumour, wouldnt count on it. Then it would be awesome, not due to the winter war part, but due to the
EW part of german invasion into the soviet union - I want T-35s and
BT-5s! But the winter war could come interesting if the
BF would issue the superheavy "test beds" seen in the war, like SMK, T-100 and SU-100Y...
But back in the subject - the "infantry colours", in the other hand, are acctually quite okay. But again, I would suggest you to check also the references and apply some colour modification as there is no single "right" tone issued. Some of M36 Issue Uniforms would be brand new, some of the would date back to the 1937, and depending about the era of choice you play, they might be in their "shirt sleeves" rather than wielding the acctual service jacket. The point is, that the jacket, trousers and field cap were all made from same, thick, wool material called "sarka". It was dark grey, a bit blueish - the finnish surpluss company Varusteleka subcontracted repro M36 suits few years back, and they still rent a few of these costumes. These are rather good reproductions, with a large research behind them, and the colour is as close to orginal as you can be, so here is the
link to the pictures. But the field shirt woren underneath the field dress was lighter, and often during the summer heats, troops did fight without their jackets, in thei shirt sleeves. The acctuall model of the shirt is quite jacketish (in that scale, nobody can see the difference..), but the material used was notably thinner and lighter - and also notable lighter in shade than the dark field dress.
Mostly the belt and webbing were made from dark brown leather, but the colour of "bread bag" was more variable, ranging from light brown to dark green. The "kraut helmet" was greenish in colour, and the battlefronts own suggestion to be used in them is okay. After WW2, some these received grey re-paint, so dont get confused if you find such examples - also during the war, some troops did repaint their helmets with more variable colours, emblems or camos, depending about their XOs opnion.
And last but not the least -
do not paint epaulettes in some other than grey uniform colour! Ive seen few examples where these have been painted in some other colour (fex. red), and its not correct at all. If you would wield "panssari komppania" list or visible tank crews at all, you can paint their headress blackish grey, as panssaridivisioonas (armoured division) tank crews did dye their sidecaps black in some cases. Also the infantry (jääkäri) units fighting under the armoured divisions command did wore "arrows of lagus"-patch in their sleeve and in side of a service cap, but thats such a small detail that it propably wouldnt be wise.
Hope these helped.
Edit: Still one more link to add, to finnish scale model hobby community:
http://www.pienoismallit.net/galleria/malli_9755/
Finnish T-34/76 number
Ps.231-3 presented in the outfit of summer 1944, with quite correct colours. Tactical number 323, 3rd companys 2nd platoons 3rd tank.