I disagree with the contention that RAL 8012 Rotbrun is also RAL 3009 Oxidrot. When Rotbrun supplies were depleted Oxidrot was substituted; which means two seperate colors were involved. Oxidrot RAL 3009 is a Red hue not a Brown hue. Until formulations or paint samples/chips are identified the actual colors will be in contention. Schokoladebrun and Rotbrun were colors in common use and if they were not distinct colors why would two entirely different names be used?
Why would RAL cross reference two differnt colors; if in fact they were the same color? Many questions few answers!
RAL 3009 Oxidrot was the principle color used in several splinter pattern camoufalge schemes used late in the war. Given that usage, it was obviously considered a camouflage color by the Panzerwaffe.
Another consideration not addressed by Jentz & Doyle was the use of captured paint stores. Russian Green and Brown paint was captured and used as needed on the Ost Front. The same probably happened France. Use of captured Artillery & Panzers was common practice as was use of captured stores of paint, fuel, oil etc.
Panzer colors continue to be an interesting field for research.