Well, I guess the colours are meant to reflect the prevailing light conditions and shades found in familiar Finnish settings: Northern Forests packed with Pine, Spruce, and Silver Birch; and thousands of lakes of course.
Actually, I rather like these muted pastel colours. Parts of of the Highlands resemble Finland.
I might do my PZ IV in 'Moss Green' with weathering, and skip the other shades. I imagine that there were many rush jobs, especially towards the end of 'Lapland War' with the Germans (1944-45), and as consequence of the unremitting struggles since 1939.
This webpage caught my attention, as it also provides little info on the 15 PzIV Ausf J's Finland used against it's former friendly power (not an Ally, as such...)
http://www.jaegerplatoon.net/TANKS7.htm
You've probably clicked on this one before, given the thoroughness of your 'Net trawling prior to a build.
"Get your facts first, and then you can distort them as much as you please"- Mark Twain.
:
), I could almost imagine decorating their bedrooms in camo like this... 
), and blue door with a 'Keep out' sign on it...
