How to set custom profile avatar in Google Chrome (macOS) w/out changing your Google Account picture

1. Set your avatar to the cat one
2. Goto /Users/.../Library/Application Support/Google/Chrome/Avatars
3. Replace avatar_origami_cat.png with the custom avatar you want

Even though it shows as the cat icon:

It will still show up as the custom avatar w/out having to change your Google Chrome profile.

...and in tools like Choosy: