Thanks for the welcome.
It's going to be an opal white GT, standard apart from black alloys.
In the past I haven't been so troubled by colour choice in cars, but, for me, the RCZ is so much about style that colour seems to take on greater importance (must relate at least partly to the unique roof). Also, you don't see many on the road, to get any strong sense beforehand. I spent today going around several dealers and saw several colours. They all looked great, but the white for me was the greatest!