I would say him wearing navy pants is a big nothing burger, they are old Reebok pants and it's a photoshoot.
The CBJ have already dabbled with two pants, I would expect them to continue to do that and not fully switch.
"vegas gold" was a poorly chosen name given to that shade somewhere along the way in the past 30 years. Even in a shiny material like Dazzle, nothing about it would make me think of Las Vegas. A team in Vegas should be wearing true gold. I agree the Saints and UW should be in a more classic old gold like they used to wear.
FWIW, every possible combination was created and reviewed for the Vegas gold jersey, if you can think of it and concept it, we did too. In the end, it came down to the ownership wanting them to be "brighter" not dark like the grey ones, thus the white.
A couple of things, first off they never said they were just swapping out logos on the current H&A, so this checks out. It's a Warrior photoshoot, so they're not going to have a sponsor patch and give someone else free publicity. This is all completely normal.