The default skins of the panzer and Tiger are accurate for 1943 to 1945.
Dark yellow, Dark green and reddish brown were the actual colors used at that time.
To paint the german vehicles green would invite a friendly to shoot as all the Allied vehicles were green.
The original national color of German vehicles was dark grey. They dropped this as Allied air power made camouflage more important and it was decided the dark yellow, red brown, dark green camo patterns generally worked for everyone (except in winter of course) on all fronts.
I'm not saying these colors were absolute as there were local variations but they were the official colors and most of the german vehicles were painted in this way '43 to '45.