New behavior from grub2

This happened a few updates ago:

Gray background with white text used to be black/white. And, the displayed txt is changed from before; it’s not the same as what displays when I type “sudo nano /etc/default/grub.” After saving edits, doing “sudo update-grub,” nothing is changed. Just a simple change, like a shorter wait time. It now looks like a script file.
I suspect pushed nVidia frameworks update has mucked it. Ubuntu behaves exactly as before, it’s just grub that has issues.

kgw