If they had two-colour scheme,I wouldn't go for the hard edge, more like 1/3 brown 2/3 grey soft edge as described in Panzertracts 1-2.
In this tread you see the soft edge camo on vehicle "R". In the background stands the replacement Nbfz. No.2.
http://www.network54.com/Forum/47207/thread/1299159025/New+%28-%29+photo+of+a+%26quot%3BNeubaufahrzeug%26quot%3B