Hey guys, I'm using Thunderbird 68. My problem is that I prefer to set my background color to black with white, as it is easier on my eyes. I've never had any problem with this, but suddenly when I send an email, the person either receives it as it appears on my screen, or it appears to be blank to them (but it's really white background with white text) as I presume their email is the standard white background with black text. I've tried everything I can think of to fix this.

Any help is appreciated.