Interior colour of StuG?

Hi All,

So I just started putting together Tamiya's StuG III - the one with the little doggie mascot. Actually, my wife and kids were away for the weekend so I pretty much went at it for 14 hours straight - yeehaw! Anyhow, I'm hoping that someone might have the answers to a couple of colour scheme questions.

First, what colour should I paint the interior? I was just going to use something like panzer grey to tone down the yellow plastic so it's not visible through the hatches. However, what do I do about the interior side of the hatches? Are they grey, the factory applied dark yellow, or something else?

Second, I'm building an Eastern Front StuG with a dark yellow base / red brown camo paint scheme. What did the crews do as the season turned and the snow fell? Did they apply a white wash over top of the yellow/red brown camo? This is my first German tank so I'm not quite sure. Also, if they applied a whitewash, was it like the Allies - mopped on with whatever was at hand or sprayed on if you were lucky? Anyway, winter camo over top of summer might make for an interesting depiction of a well-used seasoned vehicle - I might try this if it was something that was done.

Any info would be terrific! Many thanks.

Jim