My group folders are always blue, never yellow

The introductory video says, “Groups are yellow by default. Groups excluded from tagging are blue,” and these colors appear on the demo screen. But on my screen, group folders are always blue whether or not they have been excluded from tagging. What’s going on?

DEVONthink Pro Office v 2.1

OP here.

Sorry. The condition that I described was the result of having Preferences -> General -> Colorize icons with label checked AND having the label color set to none. The default label color causes folder (group) icons to be displayed in the Finder’s default (no label color) of blue. Actually, this seems like a bug to me but I’ll be quiet now while I think about it.