Detach all components from library and make them local?

I have a file that has a lot of fields (it’s a design of a very large form). I need to propose a change to all of them where I change the way they look. I do not control the library.

Instead what I want to do is detach all input instances from library, make it dependent on a local component, change it’s design in one place so it only affects my file.

How do I do that?

Okay, seems I found a solution – copy one instance locally, make it a local component, select all instances of the library component, replace through Swap Instance with local one, do overrides in the local one.

Works, but feels extremely hacky.