I was just informed that as of Thunderbird version 61.0 Mozilla will no longer support Full custom themes. This is the most ludicrous decision I ever heard. It seems to be another arbitrary decision by Mozilla. I, like many, use full custom themes because we don't like the default Thunderbird themes. Just changing the colors of the headers isn't very helpful. But full customization of a theme is great.

Why has Mozilla decided to drop support for full custom themes without even asking the community if we support that decision? Exactly who at Mozilla makes these decisions? What is their names? How many people actually control Mozilla? As a very famous writer once said: Something stinks in Denmark.