Any marketing professional just saw the proverbial red flag in front of the bull. A lot of money is spent on brand, brand awareness, and making the product stand out from all the others. It helps to carve the niche for the product or service. To merge the Air Canada brand with Rouge would be a death knell to one of them. That doesn't preclude the airline from doing it, but I believe it makes it highly unlikely. When you look at Rouge you need to think cheap seats. When you look at AC
you need to think other things like solidly Canadian not the most opulent but good and reliable (or whatever the marketers had in mind.)
The issue of the toothpaste colour scheme is a different issue. It is very distinctive in the market, Whether someone likes it is different than if it is effective among core travelers. That being said it is an expensive one to paint with the holographic like elements. I think the move is definitely away from Euro White. Look at New Zealand's all black colour scheme. The brand new one for Etihad which a radical departure and stunning. Scoot that just rolled out of the paint shed as well. If anything does the AC
blue/green in, I think it will be expense.