I am so sorry to tuck my question under yours - but I cannot find a button to add new questions. Today, my Thunderbird software's background turned grey and text white, almost as if it has set itself to a new theme. The new color system affects the main page (i.e. folders, email header list) and is difficult to read. It does not affect the colors of the email message itself, but it does affect the frame around the email message and alert colors. Any help with a link for posting new questions where this question belongs, or help with the problem itself much appreciated. Kind Regards, Vicki