With this hack you have colored usernames of: - Administratoren (ID:6) 
                                              - Supermoderatoren (ID:5) 
                                              - Moderatoren (ID:7) und
                                              - registred Members (ID:2) 
in your Onlinelist on the mainpage.
You have to enable "Highlight Admin" in your CP, if not all is shown like the registrated members (blue)

Orginal settings of this hack:

Administrator:   "red"  
Supermoderator:  "darkred"
Moderator:       "green"
Member:          "blue"

You can change the color in the Index.php(3) (there is a remark)