I'll have a dig around when I get a chance. Are you looking for photos of real or model buildings? The buildings sound a bit like the old Scenic Effects range of buildings which covered some Napoleonic battlefields in Mittel Europe.
Plaster or rendered walls were common, often coloured, using various shades, commonly an ochre. White paint was unusual until the 19th century, & limewash didn't last so wasn't often used. Colours would be fairly dull.
Wood was usuall y left exposed & unpainted, in which case it usually weathered to a gray shade fairly quickly. Brickwork was often left exposed but occasionally got a coat of paint (probably depending upon how posh the owner was!).
The roof could be slate or tile, depending upon local supplies. Occasionally stone flags were still being used. Roads would usually be mud or dust depending upon season.

This is actually in Oz, but it was built by a Silesian immigrant in c1840 & is identical to many that you'll find in Europe.