Hi Marc,
concerning the Me 262 with meander camo - on p.29 of EF5: Stormbird colours you can find two photographs of W.Nr.110506 stored on a wagon in disassembled condition.
IMO the camo of the Bf109K-4 fuselages is not as special as it may seem.
On this picture you can see the regular late-war fuselage camo according to the Os (Oberflächenschutzliste) for the last 109s:
http://www.luchtoorlog.be/img/me109g/monta.jpg
The photo was taken in front of the western production hall of Mtt´s production site at KZ Flossenbürg, Northern Bavaria. The fuselages are complete with tail unit, cockpit equipment and engine unit ready to be transported down the road to Flossenbürg railway station where the complete wing units from Altenhammer joined the fuselages. Then the seperate parts were transported on rail to Vilseck, where the final assembly and painting took place. Here you can see the "classical" camo with RLM 81 and 83 at the sides, the darker shade painted down to the lower fuselage edge to serve as background behind the white simplified Balkenkreuz. The other paint areas show a rather higher borderline and form that typical zig-zag line characteristic for this camo system (those K-4s with the freehand-painted three-digit W.Nr., you remember?). The lower fuselage here is obviously completely painted in the bright greenish RLM 76 variation. Btw, the parts lying beside the completed fuselages are identical to the ones you are showing. Anybody knows where they belong to?
The fuselages on the scrap pile are in pre-assembled and pre-painted condition (some even without dark camo), but the camo is essentially the same concerning the RLM 81 and 83 areas. The irregular RLM 76 spray seems to equalize the lower camo edge and raises the division line between dark and bright. This is made intentionally because you can also see a soft spray of RLM 76 covering the areas left and right of the Balkenkreuz.
This makes sense for me only in case the painting of the lower fuselage in RLM was abolished to save material and manhours - not an uncommon situation during the last war days. The fuselage bottoms appear to be left in bare aluminum. Maybe Erla followed this instruction by painting the fuselage sides down to the lower edge of the Balkenkreuz - those fuselages were fabricated the other way IMO.
The caption of the photographs is said to be Grafenwöhr (Vilseck like nowadays being situated at the southern border of the Grafenwöhr training ground) - the railway visible in the background may lead to KZ Flossenbürg?
On the other hand - how certain is the caption "Wertheim" for this other fuselages? Vilseck-Heringnohe (the exact designation) is partially surrounded by woods and the US armies approached from the west - maybe a wrong memory?
Regards
Roland
Edit: The striking railway with a train on it appears on all photographs. Seem to be taken at the same site?