A series of chat backgrounds are available for chat user to choose for the chat lobby. It adds more fun to chat. (One's choice won't affect the others.)
4) Change Font
The available font collection on your own computer will appear here. This function is available in the private chat window as well as in the chat lobby.
If user A chose a special font which is not available on user B's computer, then it will show as the default font B is currently using.