Thanks so much for posting those pix.
I really like that apparent series. Its conjecture, but I enjoy the idea that a series of pix of a unit, all taken on a particular day, with one camera, one lens, hell, possibly even on only one roll of precious color film, are now our link to that particular past...
In terms of color reference, they are very useful, but not definitive. The various color casts caused by the limitations of 1940s film stock, and the bleaching of exposure, processing and printing, (let alone the scanning, color modeling and compression processes they went through to get them onto our - variable - computer screens) make some of them difficult to "translate". (I read some of the the German images as having a distinct pink color cast in the highlights, for example)
For what its worth, the road sign pointing left appears to me to be a 6 character name, starting with O or G, third character a descender (q, g or y) with a distance indicator (7 or 1 km) immediately after.