CSS username colors only working for admin/moderators?

[Moin]

Do you use CSS Classes for Current User's Groups?
Or is the group their primary group?

@Discourse

It is possible to automate this function and customize all posts written by staff users in various ways using CSS. In order to do this, it is necessary to create a primary custom group as described above, see the Flair chapter. When your staff members are in a primary group you can target their posts with CSS.