Well today i spottet (must be a member here)

A Signum 3.0 V6 CDTI in Kr. Hyllinge (yes in Denmark) it had vectra-c.com stickers on..

The car was registerd in Poland..... would call the car "lime green" or what its called... with satnav, and color coded opel frontgrill, and SRI bumper.

Must have been a model year 2004.