You see the banner on my postbit is grey but should be blue.
I changed the CSS to the green style:
and it changes correctly on the banner:
If I change it back to the blue one, it doesn't show correctly and goes back to being grey.
This is all with a custom theme with it's own colour palette. If I change to the default theme then everything is fine.
I assume that this means that bannerPrimary is tied to the default colour palette that's used for the default style rather than being the actual colour displayed in the ACP?