Hello to the both of you,
I do have the exact same issues. With the font colour (of the background colour, however you want to put it) as well as with the free-text-fields.
The technical details:
My EndNote Version: X9.3.2 (Bld 15235)
System: macOS Catalina, Version 10.15.3
Which version of EndNote are you running? And which macOS are you operating?
Thank you 