Intent to ship for a Houdini spec in Chromium, Custom Paint API: https://drafts.css-houdini.org/css-paint-api/

The “future” of CSS is here already. 😮

See: https://groups.google.com/a/chromium.org/g/blink-dev/c/Jex3idOld48/m/dDOK4U5lAwAJ