Changing Group Colors
Unlike Invisionfree, Zetaboards does not allow html to be used in the Prefix and Suffix input fields.
This Documentation applies to ZetaBoards only.
In order to alter a group's color go to Groups in your board's AdminCP then click on the group you wish to edit. You will then need to locate a box that says Prefix and a box that says Suffix.
The Prefix box contains anything that would appear before a username, while the Suffix box contains anything that would appear after a username. Instead of html, Zetaboards Prefix and Suffix boxes use BBCode. Below is an example of how to have a green colored name.
Prefix
[color=green]
Suffix
[/color]
This produces: Administrator
In addition, bold, italic, background color, border and strike-through tags can be used. Here are a few examples:
Prefix
[border=red,1,solid][bgcolor=black][b][color=white]
Suffix
[/color][/b][/bgcolor][/border]
This produces: Administrator
Images can also be used in Group Prefixes and Suffixes. Below is an example of an image coming before the user name:
Prefix
[img]http://209.85.62.24/static/1/collapse.png[/img]
The Suffix box would remain empty.
This would produce: 
Administrator