use the /nick command
- type /nick
-goto the msgplus sign on the left of the convo window
-text colour formatting tag
-select colour
-type name
-press enter
e.g:
/nick (COLOURCODE)May73Alliance
This picture maybe of some use but i think its the tutorial you was talking about..
http://shoutbox.menthix.net/attachment.php?pid=280893