I know what you mean about the colour though. We couldn't find any dealers with orange ones to look at either. By chance we saw one parked in the local Tesco car park and decided we liked it. It needs the sunshine to make it really pop though.
The colour choice is a bit limited if you want a '3' spec. I didn't want another black car, keeping the 300 clean is a nightmare, and the various metallic greys were out too. That left orange and white. The fact that the mud around here is orange helped us decide.