In Gnome shell settings, setting Style to Dark, makes it work pretty well in almost all apps. But it does not affect gedit. Screen shot in the attachment.
Yes, gedit does not support the Dark style preference. Workaround ---------------- 1. Open the GNOME Tweaks app 2. Click Appearance in the left sidebar 3. Set the Legacy Applications theme to Adwaita-dark Thank you, Jeremy Bícha