Custom Race Pictures

Hello, i do hope this is in the right spot, and i have searched if this question has been asked/answered on another topic before, but did not find anything.

So i ask you,

How do you input you're own custom pictures into the race pictures in-game?

I've tried the obvious, copying the pictures to the race/logos folder, but when i went in-game only the original race pictures showed up.

So i do ask, how do you input custom pictures you want to use for a custom race?

 Ah, i seem to have forgotten, i have Dread Lords, not Dark Avatar or Twilight of the Arnor.

I thank thee who answers.