Newb question about empires

[Flow]

Hi, this is my first post here on the forum so please be gentle

I'm sorry if this question has been asked before but I couldn’t find anything about it with the search....

OK, here goes: Is it possible to rename (and/or further edit) the stock empires the game ships with?

So for example, can I rename the terran confederation and call them Human Empire or something? I know one can edit an empire and save it to a file. But in that case the "new" empire is created while the old remains unchanged. All I want to do is edit the existing empires, not creating additional ones.

Any sugestions?
Thanks