We used to have this using a vBulletin forum and when I migrated to XenForo, it was one of the requested additions but I can't find a solution anywhere. Here are the details. Default User Text Formatting - Allow users to chose there default text formatting from (User CP).and applied on new threads, new replies and group discusses With inline styling preveiw and Zero Query! AdminCP controller. ability to turn it on or Off. ability to set font types ability to set font colors. ability to set font sizes. ability to set groups (Allowed Groups.) - new ability to set woking locations. - new New thread New reply / Quick reply box. Visitor messages. Private messages ( New & reply). Groups discussion.
Here is the link to the vBulletin version. http://www.vbulletin.org/forum/showthread.php?t=231923 Was pretty popular over there and nothing like this exists for XenForo so I bet it'd be useful!
Hello, Thanks for your getting in touch with us. After researched your requirement, we'd like to confirm with you that we can do this for you as a custom work service. Please see more information at https://brivium.com/custom-xenforo-addon-development/ Regards,