I?ve also been on a colour quest, as I m in the process of redoing a Jota frame and wheels.
I researched Laverdamania and previous Laverdaforum posts and compared the suggestions to the shades of silver and the metallic flake size of the colours of the existing frame and wheels. This is what I'll be using.
Frame: Fiat/Lancia 647F Grigio Steel
An earlier forum post,
http://www.laverdaforum.com/forum/index.php?topic=50627.0, specified Fiat/Lancia 629 Grigio Steel as an exact frame match. The paint supplier I'm using lists various Fiat Grigio Steels, but not 629. I'll be using the 647, which is also a very good match. Definitely not RAL 9006, which is quite a different to the original frame colour and metallic grain.
Wheels: RAL 9006