It’s also called “Material You”, introduced in Android 12. The idea is that all apps change their main colors to colors extracted from the wallpaper image. So if you set a red wallpaper, buttons etc in AntennaPod will be red instead of blue.
I concur when I translated I needed to do some internet search to confirm it was material you.
Afterward another translator asked about it on transifex and it has been confirmed it was material you / dynamic theme.
I thought there has been a commit to change name but can’t find it? I think it should really be renamed. On internet all I can find as name is mainly “dynamic theme”.