Hi,
I'm using the native dark theme in Thunderbird.
Sometimes, when I reply to an e-mail, the attached text of the original e-mail appears black on black background in the message compose window. This is quite impractical, since I like to reread things the other person has written.
In some cases, when I reply to an e-mail, my own written text appears black on black in the message compose window.
Then I have to select the text to profread it.
Maybe this behavior is caused by an embedded color code in the original e-mail, but I'm not sure.
A solution for this could be a checkbox in the settings to force dark text being rendered in white with dark themes.
For me, it would be enough, if dark text would be always rendered in white, when using the dark theme.