For years I have had customised folder colours for new mail in Thunderbird. These are set with a file userChrome.css in a chrome folder in my user profile. I created a new profile to try to sort some bugs and copied the file and folder from the old profile to the new profile but Thunderbird will not observe the rules in the file in the new profile If I swap back to the old profile all is OK again (except for the bugs I am trying to avoid). Is there setting in Thunderbird (like Experimental) that I might have set in the old profile to get Thunderbird to look at the css file. Thanks, steve