Does anyone know how to create a shortcut to have the Apple Pencil be able to turn color filters on and off?

I’m trying to create a shortcut on my Apple Pencil pro so that when I squeeze the pencil, the black and white color filter turns on. This is easy enough, but I’m not sure how have the pencil turn the color filter back off when squeezed again.

I am not good at coding, I’ve never done this shortcut thing before. Could someone more knowledgeable about shortcuts help me out? Thanks so much :)