Marcelo,

The little I know, based on the Panzer Colors series and internet, all vehicles of the Wehrmacht in that period were painted in Panzer Grau. Some of them had white painted on the edges to improve visibility at night when travelling in convoy. Some crews quickly decided that to enhance camouflage whet mudd was very effective. A few could get their hands on other paints. When winter arrived they basically tried everything that was at hand, includung bedsheets and table-cloth. Usually the crew painted the improvised camouflage around the divisional and tactical markings.