Especially at night, when wifey is trying to sleep.Personally, I don't like either theme, I prefer a dark background with light text.

Thanks! I tend to stay away from 3rd party extensions. But this one is worth it.you mean like this?
there is tons of options - this one is browser extension called "Dark Reader".
The default keyboard shortcut to toggle Dark Reader is Alt + Shift + D
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Every drafter I have known (not so many anymore) preferred dark screens in dark rooms.Some of the drawing programs download with a black background screen!!