Alas, matcha doesn't even look that promising. There is no demo page to quickly see styled elements, the color palette is garish and the default button hover is illegible, with dark background on dark text. It certainly needs more polish.
I actually love sakura, but I wanted something more complete like having syntax-highlighting styles out-of-the-box and still have some utilities classes.
The demo page is supposed to be the website itself which is intended as a documentation too (you also have a basic website previewer at the begining).
It definitely needs some more polish, but I wasn't expecting this being posted on HN this early
And looks more 2020s than 2010s. The prejudice was imparted to me from other devs and I comply to avoid unfavorable first impressions with my software.
A cursory look suggests that matcha.css is a little more advanced. Will give it a shot.