Has anyone made a kvantum theme?

I am currently experimenting with a Kubuntu VM and I’m planning on switching my Desktop OS soon. I like a lot of things about the Sweet Plasma KDE theme, but would like to customize some aspects of it. The documentation that I’ve found on kvantum is kind of lacking. I see that I can edit the kvantum svg and theme config, but experimenting with changing some of the colors has yielded no change at all which is confusing me.

Anyway, just wondering if anyone has gone down this particular rabbit hole before.