How to Add Different Colors for User Groups??

hi,

[b]How to add Different colors for Different User Groups???[/b]
([b]Eg:-[/b] [b][color=red]Admin[/color], [color=blue]Moderator[/color], [color=lime]Super Moderator[/color], [color=darkslateblue]Member[/color], Banned[/b])

[b]Pls help...:) [/b]

Admin CP.  -- Users  --  User Group  --  Rank Color: put the color in.

bt it just can display in the post.