Shoutbox

My script is good for this: Message Customizer! Live.

It may be a little harder to use but if you need help then just ask.  You can even set it for each of your contacts individually or in groups and you can leave your text unchanged so it doesn't effect your contacts without Plus!

EDIT: This is the right section too

EDIT2: After reading your comment in the other thread, to change colours and add people to the list you habe to first create and select a group.