Here's a thought - I wonder what's she'd look like in the Jag Racing Green that was on their F1 cars?
IIRC, it was slightly metallic, and Jag offered it on their roadcars at the time - so it should be still available.
Or should I go classic dark solid green, as worn by Blower Bentlys, C-Types and the like?
[EDIT] -
Yep - F1 Green:
JAGUAR JAGUAR RACING GREEN PEARL 1957/HGZ 2002 - METALLIC
Classic Racing Green:
JAGUAR JAGUAR RACING GREEN HEN/701 1986 1987 SOLID
JAGUAR JAGUAR RACING GREEN 705/HER 1985 1986 SOLID
JAGUAR BRITISH RACING GREEN 254/HDJ 1976 1978 SOLID
There's also something called Brooklands Green, which I assume is another BRG derivitive:
JAGUAR BROOKLANDS GREEN 753/HFG 1990 - SOLID
Need to get a colour chart!
http://en.wikipedia.org/wiki/British_racing_green