(...)I am ideally after a late s1 or s2 Aero in a conservative/traditional (or dull to smoe of you!) colour combination.
Well, Charlie... how about this combination? Not dull at all...
...and very traditional. For example, Bugatti:
Picture taken from:
www.scaleautoworks.com 
Picture taken from:
www.modelmotorcars.com Salut,
Ivo
)