In the compose messages windows the background is black and my text is blacker.
This is most likely a problem with TT Deep Dark, but I can't get rid of the preferences that is doing this.
What I have done so far is:
Uninstall, Reinstall
Change Text Background Color
Remove TT Deep Dark theme, set original theme as default
Unchecked box use system colors.
ప్రత్యుత్తరాలన్నీ (3)
What do you have for Tools/Options/Display/Formatting/Colors (see picture)? Maybe you have to change the override setting.
Thank you sfhowes for commenting, I have text as black and background as white what it should be but it does not override what I showed in the screeenshot.
Tools/Options/Advanced/General/Config. editor, right-click a preference, Modify, for these prefs.:
msgcompose.background_color msgcompose.text_color
Black = #000000, white = #FFFFFF
https://html-color-codes.info/
Also, double-click the pref. msgcompose.default_colors to false.