I have three individual email accounts that open on the same Thunderbird page (and I like it that way). I would find it very helpful if the accounts could be identified each by a different color for the whole account or just for the Name of the account and/or the Inbox. That way it would be much easier to be sure that I'm sending an email from the correct account. (Currently, I inadvertently send from the wrong account when I don't pay attention to which account I'm in when I click on "New Message." That leaves the recipient of an email with an unknown-to-them return email address confused.) I have color coded the small icon in front of these labels, but the icons are too small to catch my attention. If the actual printing of the label - 'Email Address Name' and/or 'Inbox' could be color coded (with or without the icon color coding), I think my life would be more pleasant.