In August 1944 the factories were instructed to add the following camo to combat vehicles:

RAL_6003RAL_8017RAL_DGMwh_sdkfz_camo-001

Ral 7028 Darkyellow
Ral 6003 Olivgrόn
Ral 8017 Chocolate

This "ambush camouflage" was used mainly to hide the vehicles under trees, from allied air attacks. Will be added to my StuG when built.