Thanks Shawn! Lots of stuff in Southern Russia was painted in tropical colours:

This is a Stug F in Stalingrad, late 1942.

The Tigers of sPzAbt 503 are another example. They are often thought to be grey, but in fact official documents say they were delivered in
Tropentarnung, just like Bovington's 131. The whitewash makes the base colours look much darker.
In the meantime I made some cold weather modifications to the 10/5:
Since there's no resin cold weather cover available for the Sd.Kfz 10 I improvised something with some metal foil that came with an Asuka Sherman.
I also bought this new Miniart set for the crew, I probably won't use them all, 2-3 will suffice:
Philipp