Like rainbow or something,
I know theres a box for codes, and how to set colours,
I mean like a group to have a colour like this

Admin

If you want to add a color for your rank name you can add this HTML code in the "Rank Title" field:

Code:

<font color="red">Rank name here</font>

Replace red with any color you would like or with any Hex code color and Rank name here with the name of your rank.

This also works for colorizing only parts of a rank name:

Code:

<font color="red">Admin</font>istrator

The result would be: Administrator