Today, 08:26
I hate to be critical of others who put a great deal of effort into trying to make CFS3 better; however, IMHO, the ? is whether we want a realistic sim or a beautiful sim. Much or the UK, and probably Europe was pretty grim WRT housing and even roads, as illustrated by Shessi. Most house heating was by coal, so everything was covered with pollution, even the trees would have been a darker colour, in towns at least; even moths adapted to be a dark colour, as the trees were so effected by pollution. The roads, if Tarmac, would probably have been a dark grey, maybe lighter if gravel. Grass, whatever there was, would also be in bad quality.
The makers of the sim probably lived in suburban USA, as I now do; very different from 1940's Europe!
However, your last picture is much more in the...