Non-cyberpunkish alternative?

Hello, thank you for the awesome work here!

I love this unified and consistent look, very nice in KDE Plasma, though I don't use Suru++ currently because some colors are too vibrant (eye-strain) and the whole icon set looks a bit "childish", it doesn't give me a "professional/serious" feeling. EDIT: and comics/pop icons like CaptainAmerica, StarTrek, etc.

Do you think it would be possible to have a more classic variation sooner or later?

PS: english isn't my mother tongue, sorry if I sound rude...