Rated 3 out of 5 stars

Hello,
Your module is really good, it allows me to have a visible reading. Unfortunately it is not stable. The white background stays for a few minutes and then turns black again. It's very unpleasant. I'm even considering deleting Thunderbird, because having a black background and having to go back to the module tab each time to find a white background is exasperating.

This review is for a previous version of the add-on (66.2). 

Hello DPo30.

Hi DPo30, do you want to change MESSAGE WINDOW color?
If so, please use Dark Reader or Darko...or...
FrameWhite is themes which change Tb body parts colors.
Dear DPo30, have a good day.

Sungho.