Since you can customize username color in chats and choose your identity with various badges, it can also be cool to change user type badges, such as the chat moderator one and the sub badge. Within the sub badge, consider letting people choose among the badges redeemed with sub months, instead of having the current month badge only. As far as the chat mod one is concerned, you can think of changing just the color of this one, so you can effectively customize your entire chat appearance.
Since you can customize username color in chats and choose your identity with various badges, it can also be cool to change user type badges, such as the chat moderator one and the sub badge. Within the sub badge, consider letting people choose among the badges redeemed with sub months, instead of having the current month badge only. As far as the chat mod one is concerned, you can think of changing just the color of this one, so you can effectively customize your entire chat appearance.