Dear kpcrash ,
About your customization, the steps are as follows:
1. One user login to chat room
URL: CuteChat\Chat Web Messenger standalone\Web\CuteSoft_Client\CuteChat\Channel.aspx
When user login, you need to read the setting data of this user from database, and then set the current used font,color to the one which are saved in database.
2. When this user quit chat room, you need to get the setting and write it to database. This is a customization function, you need to create new table and store the user setting data.
Regards,
Eric