In late 1939, OKH decided to use only the dark (panzer) grey (RAL 7021) and by mid 1940, it was the only colour used, as it was factory applied.
In February of 1943, by the order of OKH, dark grey was replaced by dark yellow (RAL 7028) as the base colour for all German vehicles. For camouflage patterns dark olive green (RAL 6003) and red brown (RAL 8017) were to be used. Sometimes also olive green (RAL 8002) was used as well, especially in spring and summer.
It seems that panzergrey was used a lot, but perhaps other patterns could add to the diversity?On August 19th of 1944, OKH ordered that dark yellow (RAL 7028) was to be factory applied as the base colour with dark olive green (RAL 6003) and red brown (RAL 8017) for use in camouflage patterns.