Currently, unless I'm using it incorrectly, when I select "Use folder colors," it randomizes colors for all the folders. You can then toggle on "Inherit color from parent folder," but the color choice for those are randomized also. And again if you toggle that off, it randomly selects colors for every single folder in your email. Let's say you want to just highlight one email in a section-- you now have to hand change every single folder.

It would be better if they all stayed the standard color unless actively changed.

Then if you have "inherit" toggled on, when you select a color for a parent folder the rest could change at that time.