[Hugh]

Changing to a new tablet (Lenovo Tab4 10inch aka TB-304F Android 7.1.1), I decided to try the High-contrast Text setting in the Accessibility settings. It is marked "experimental".  Whilst it made my MobileSheets Pro library lists stand out a bit more, it had the undesired side effect of making all my typed annotations show up as black, no matter which colour I chose.

I was about to report this as a minor bug or anomaly with MS Pro, but I realised in time what might be causing it, so have now turned off this feature.

Sharing the information in case anyone else encounters this...

Hugh    London UK