Monochromacy available in the drop-down menu
Which version of the software are you running?
fp2_sibon-userdebug 10 21.11.1-rel.0 sibon-8ad171ee
Summary
I wanted to have my screen in black and white to have less tired eyes and decrease screen addiction.
Proposed solution
I would the monochromacy mode to be available as a button in the drop down.