..are now available. https://store.kde.org/p/1313336. Didn't know that.
..and so is the chameleon round icon set. https://store.kde.org/p/1608766. Didn't know that either.
..and, with some adjustments, you can make your custom ones using the breezedark script. https://github.com/RaitaroH/BreezeDarkIconColors. That, I do know.
Like so ( my earthy look..) https://imgur.com/a/9MKmoWv