Well tonight I haven't really felt in the zone, so I've just done some of the hack work. The good thing is I've got a jar of Humbrol #15, which looks like a pretty good match to the troublesome blue decals. I'll clean up the decals in those NACA ducts before spraying the clear coats, then paint the NACA ducts once all the polishing is completed. Tamiya TS-13 destroys Humbrol enamel, so I'll have to go in that order. It's too windy to spray here tonight, it just puts a few dust particles into the air around my spraying bench in the garage.
There is one other liverie for the C9 that I'd like to attempt:
http://www.racingsportscars.com/photo/1987/Norisring-1987-06-28-061.jpg
http://www.racingsportscars.com/photo/1987/Norisring-1987-06-28s-061.jpg
http://www.racingsportscars.com/photo/1987/Norisring-1987-06-28s-063.jpg
These are the only photos I've found. I don't know of any decals and haven't been able to google any.
I really need a better side on photo, then I can assess whether it's achievable using available decals for the minor sponsors possibly with some home made ones for the 'SAT Additive' and 'JK' logos. The other possibility is to source these decals from some decal sheet that is intended for another make of car, but once again, I haven't found any (yet).
I think this would then cover all of the main liveries worn by the C9 in anger.
Cheers
Tony