I found out that the correct KDE theme package is sweet-kde-theme-git, but when trying to install it I get this error:
Error: sweet-kde-theme-git: signature from Nico Jensch (Chaotic-AUR) <dr460nf1r3@garudalinux.org> is invalid
Failed to commit transaction:
invalid or corrupted package (PGP singature):
Also, I can’t find the Konsole configuration anywhere here: