I remember seeing a '66 Chevy II Nova SS in the Canadian Old Car Auto Trader, national edition, back in the 1980s sometime. It was in Alberta, belonged to an old lady in a retirement home (so the story always goes) and had a 283 with a 3-speed manual column shift & no console! I do recall it had a black vinyl roof cover. That would have been added later, as the Chevy II did not offer a vinyl top until 1967, and then only in the U.S. Besides, we had D99 mouldings freely optional in Canada and people actually bought them.

I'm going by the U.S. Chevelle charts for 1966. Chateau Slate was offered with black, white & black (SS 396), blue (300, 300 Deluxe, Malibu), & bright blue (Malibu convertible & SS 396 models). That suggests that 1966 Acadians offered Chateau Slate with blue interior (only) on the Invader & Canso series, black or bright blue on the Canso Sport Deluxe series.

Chateau Slate is a kind of muted silver with a greyness to it. They seemingly didn't offer red interior with it but I think it could work. Chateau Slate was offered on the 1965 models and was a carry-over for 1966. I have pictures on an old drive of a factory Oshawa-built 1965 300 Deluxe with aqua interior.



Blue Charcoal is another Canada-only 1966 colour that was offered across the board. It was actually a 1966 Oldsmobile Toronado color. I've seen them with black, white, & medium blue interior on various GM Canada models.

Cypress Green was a 1965 colour that in Canada-only was carried over to 1966.

People talk about Royal Plum being a rare 1967-only color. In Canada we had it first on the 1966 models before the 67s. We called it Plum Mist. It was actually a 1966 U.S. Pontiac-sourced color.