My users are requesting to have their names colored. The only think I know how to do is change the usergroup colors, so is there a hack I can use for this?

To change the color of your usergroup usernames:

Go to AdminPanel-->Usergroups-->Usergroup manager

then select the usergroup ("Registered users" for example)

in HTML Markup field enter code:
In first field <font color="red">
in second field: </font>

you can enter any color name beetwen quotes.In this way you will have colored usernames for all your Registered users.You can do the same for each usergroup with diferent colors.