I want to edit the super_face.py

I’d like the rigify script to generate the same rig for all my characters without having to customize every rig one at a time.

I would like to change some custom bone shapes into different ones. What part of the code designates the shape of a rig bone?

Can someone show me please what to replace by example: the left cheek box shape into a circle shape. I just need an example and I think I can do the rest of them.