I’m a noob, forgive me for stumbling across the answer after posting my query.
Along with Ghost Fade, this feature is well enough catered for via quickly changing the theme to any of these:
Minimal, with Minimal Theme Settings > Dark Mode Background Contrast > True Black, with Dark Mode Color Scheme either Everforest for the green or Gruvbox for a red just right forlate night low ambient light.
Obsidianite
Terminal
It looks like there are even settings in Minimal Theme Settings for me to play with hotkeys to do this at a moment’s notice.
I love the creators here already.