There is typically another label on the nav computer that shows the VIN and other information about the car in which it was originally installed. Does this nav computer have this other sticker? That is the one that will tell you if it is coded for monochrome or color.

__________________
SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input