How to replace svg icons in Palo Alto theme?

We are using the theme Palo Alto and would like to replace several icons.

For example, I would like to replace the icon-zoom-in.svg and icon-zoom-out.svg.

I deleted the existing icon-zoom-in.svg and uploaded a custom icon to the assets folder. I was careful to use the same file name icon-zoom-in.svg.

That didn’t work so I assume there is another step in this process. Any help would be greatly appreciated.

That should be enough.

Can you share a preview link to the theme you’re modifying?

https://blairritchey.com/?_ab=0&_fd=0&_sc=1

I certainly can see that it’s not a default theme icon now.