chat site mod (easy code)

I have a open source chat site wrote in php called x7chat,i would like a mod made for it so when i open admin CP and click on manage groups i can add a new group and have the option to change the nickname colour to red example:if a tick is placed all nicknames in that group will be red and if no tick is placed in it all nicknames in that group will be black FOR THE RIGHT PERSON THIS WILL BE SIMPLE CODE IS AVAILBLE TO DOWNLOAD