Although it was a bit of a blur, the one in my group ("B") had a dark grey/ graphite (?) tail panel with, I think, black rear wheel arches. I've got video, so I'll have to check.
What colour was the other Caterham? (there was once insane driver, regularly overtook me round Gerrards, in a light Green machine that must have needed new left rear springs by the time he finished).
Where do you "dogvet", dogvet? We've got a kennels so we're in a similar line of business (no, we're not like most kennels - see www.heavenlyz.com).
Peter
Q45VWP W-e-s-t-f-i-e-l-d SE Xflow
130bhp (now and again) 560kgs