I have recently acquired a pair of 4" barreled NOS Walther CP88'S. One is RED and the other is SIGNAL GREEN. According to the FACTORY markings on the boxes and the actual guns themselves, they were made this way from the factory (and NOT done aftermarket). Umarex USA and Chambers both have no idea as to why these are made in other than the standard blue/black or optional silver. Can anybody offer any idea as to what I have and why? Its already been suggested that they were part of a "special" run in Europe, but for whom and why is a mystery. Any information would be helpful, Thank you!