@leocg Okay.
It's working fine in Chrome, Edge, Safari, and Firefox. And I thought that, according to the browser compatibility table on this page, it should work in Opera 79+ as well.

The accent-color CSS property not working in Opera, although it's working in all other major browsers. I have tested this on various laptops running Windows 10/11 with a fresh installation of Opera 132.

The example link I am testing: https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Properties/accent-color

Opera screenshot:

Edge screenshot:(accent-color working here)