it's not that mature.
Currently implementing a tailwind-based theme provider.
it's not really comparable to tailwindui since that's mostly a collection of html code snippets.
supabase ui is mostly going to be radix components and a few custom components of ours styled with tailwind CSS classes, which, if you want, can be changed to whatever you like. the tailwind classes will be generated by your own tailwind config in your own app with the help of a supabase ui config file you wrap around your own tailwind config.
This probably isn't that ideal for most people unless you already use tailwindcss in your app.
It's also probably going to heavily rely on radix colors (
https://www.radix-ui.com/colors) as a default rather than tailwind colors.