The caption is incorrect, Air Canada does not offer First Class on any aircraft. Just Business Class and Economy. The products are different though with regard to International Business vs. Domestic Business Class, as is the case with most carriers.
For example J on the B767 is 2-2-2 Domestic and 2-2-1 (or 1-2-2) for International Business Class.
The seat colour is ... well sigh, typical Air Canada. Called Spruce Green, it graces all of our aircraft from the CL
-65 to the B747-400. No, it is not my first choice either, but they tell me it is .... restful. (oh yeah?)
Just because I stopped arguing, doesn't mean I think you are right. It just means I gave up!