v5 docs: brand guidelines need update (and question about the brand colors explanation)

obviously, https://v5.getbootstrap.com/docs/5.0/about/brand/ needs to show the new logo, rather than the old one.

however, skimming over them, I also stumbled across this part https://v5.getbootstrap.com/docs/5.0/about/brand/#colors

Our docs and branding use a handful of primary colors to differentiate what is Bootstrap from what is in Bootstrap. In other words, if it’s purple, it’s representative of Bootstrap.

I'm not quite sure this has ever been obvious to me while going over the docs. Is that actually still the case?

/cc @mdo