Is there a way to change the flavicon to another fediverse platform?

Untalended guy in programming here.

• Is there a way to change the flavicon(icon in the tab preview as I understand) to another fediverse platform?

I currently have "mouse in flag colors" as an icon based on feddit org. But I would prefer for example the feddit IT logo - orange mouse, clean design)

Is that possible to change with like tampermonkey addon or something somehow in a rather easy way? I have an addon called "TwitterBird" for Mozilla replacing all X logos with the old blue twitter logo

• Or is there even a better way to accomplish this without creating an additional account to swap to all the time?