1. Turn on the “Filter type” “Grayscale” [1] 2. In “Shortcuts” only select “Color Filters” and leave everything else unselected [2] 3. When you use the accessibility shortcut it will toggle grayscale on|off a. Press the Touch ID 3 times b. Or press "option" + "command" + "F5" [1]: https://support.apple.com/guide/mac-help/change-display-colors-easier-onscreen-mchl11ddd4b3/mac[2]: https://support.apple.com/guide/mac-help/quickly-turn-accessibility-features-on-or-off-mchlp2975/mac.