The only changes I see are colors but what if I want eg a different border radius on buttons or margin on labels or specific fonts on elements etc? I don’t find changing only the colors of components particularly valuable but would like to see more variance in the actual shapes and looks of things.
Global border radius is editable, that setting is at the bottom of the sidebar. The challenge with global shadcn theming is that you're limited to adjusting the css variables they provide. I believe there is a global spacing variable, but it is not so specific that you can target e.g. just label spacing. That would be something you could modify directly within your shadcn input components via adjusting the tailwind class(es).