There have been a few dealer cars such as a sunfire yellow '67 convertible with a dark blue interior at some shows. This car was at the NCRS show in Florida last year. It was a s/b 327, p/b, p/w, p/s, heater-radio delete car. ODD indeed! Also in 1966 there were 4 Corvettes sprayed in Trophy Blue with a BIRGHT BLUE interior. This combo was NOT offered by Chevrolet. The man who restored my Corvette has 2 of the 4. The cars were not delete cars they were normal optioned Corvettes with different interiors. They were sold in all of the engine options:
Coupe: 427/450
Coupe: 427/425
Convertible: 427/390
Convertible: 327/350
You can see picture of his 450 car @
http://www.vetteworks.com/prod03.htm
-Dan