And one final step... night lights!
Windows, easy... but I was having some trouble doing anything meaningful with the sign on the front... there isn't enough night light colours available to be able to do much with it without ruining the image.
I put a red light on the SFC bucket on the roof, seems to look good at night and still fine during the day.
I also experimented with red lights running under the windows, but I'm not sure if I like it.
Let me know what you think.

Compare red lights under window and on sign vs. winter picture:

With the final decision on the night lights, that will complete the SFC project for full release.
[EDIT]
Changed daytime pictures to have sharper resolution rendering like the snow ones had. I like that style of 3D render better for Simutrans, it's a bit "crisper" of an image (less blurry).