[ntauthority]

It does, under the accessibility options. 'Contrast themes' allow fairly fine-grained customization, still, and a lot of legacy values that have been there since Windows 95 are still supported otherwise to some extent albeit sometimes hidden.

[Jedd]

I've hunted through Ease of Access (as it's called in Win10), and trawled through forums, trying to find a superior solution -- but the best I could find, and manage, is shown here:

https://imgur.com/a/WgzR8j3

Obviously with a busier amount of text on fore / rear terminals, and more than just two terminals -- that lack of a clear border becomes a massive confusion.

If you've found a better configuration, please do share.