How to use Accessibility Shortcuts for enabling Display Color Filters?

Question

As part of my evening routine, I have enabled Dark Mode and Night Shift to turn on in the evening. In addition, I like to turn on the grayscale/greyscale color filter option in System Preferences > Accessibility > Display > Color Filters > Enable Color Filters as shown in the screenshot below (1).

Now, instead of drilling down into the appropriate submenu to turn the color filter on | off, is there a way to add this option to the Accessibility Shortcuts list from the drop-down menu bar button as shown in the screenshot (2)?

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Just to be thorough in my question, I want to show that the existing shortcuts do not include Color Filters as shown below. I do not see an option to add additional/new shortcuts.

Answer 1

On macOS Big Sur., you can enable that option here…

Answer 2

A workaround is to use an AppleScript saved as an application. Double-clicking it (saved on the desktop, for example) allows for making the changes quite easily.

See https://apple.stackexchange.com/a/413540/248480.

Still, this doesn't answer the original question so I would look forward to other responses.