Ok, maybe I've answered my own question. Perhaps a high contrast Theme overrides MS Office settings. Because I selected a Theme without high contrast and the above MS instruction work as described. Have I found the key?
Additionally, I found the following on MS:
You can use one theme in Office and another in Windows, or have Office match the Windows theme. It's your call.
To set your Office theme:
In an Office app, select File > Account.
From the Office Theme dropdown, select the theme you want.
If you select...
I have created a custom Windows 11 Theme. It has changed my screens the way I wanted. However, I would like MS Office, especially Excel, not to reflect the Theme's settings. Is there a way to keep that from happening.
I have went to:
Excel\File\Options\General\Personalize Your Copy of MS...