Changing the colours of Admin, Moderators, Users group in "Who's Online"

[Ultima07]

How do I change the colours of how Admin, Moderators and Users are displayed in "Who's Online" box

For example..

What's Going On?
Currently Active Users: 4 (1 members and 3 guests)
View Who's Online
Most users ever online was 5, Yesterday at 07:53 PM.
Admin, Smith, Randy, Tom, John

Smith is the moderator and all others are just members!

[Yours Truly]

Usergroups --> Moderators --> Username html markup

[Ultima07]

Thanks.

[Yours Truly]

Your welcome =]