Board Thread:Support Requests - Community Management/@comment-4537189-20130323075230/@comment-1863391-20130323080557

In the discussion you linked to, TopsyKretts3 is correct. The username color change is a stylistic one. It's usually used to denote a user's position in the wiki's community, but not always - if he has the authority to make these changes, and his fellow admins don't oppose him, it's okay for him to continue the practice.

Edit - sorry, I wasn't aware Sovq had already answered.