Nice hack, thank you! :-)

Can also use Chrome Extentions like Colorblindly to change all the colors. Tested it on the webpage now (I am not colorblind) and I see that the colors change: https://chromewebstore.google.com/detail/colorblindly/flonia...

You can also use ublock origin, it has a section for your own filters:

https://gist.github.com/aclarknexient/c39c83f2f97c3c6b1c307c...

benjdd.com##html:style(filter:hue-rotate(45deg))

Tested with uBlock Origin on Firefox Mobile.

In case you are not aware, you can put this sort of thing in a bookmark on the bookmark bar (both FF and Chrom{e|ium}, I assume other browsers too) for easy access. If you don't have the bookmark bar visible hit [ctrl][shift][B] to flip it on (and the same to flip it back off later if you don't want to keep it).

let i = 0; setInterval(() => document.body.style.filter=`hue-rotate(${i++}deg)`, 16);

Disco mode!

(better to use requestAnimationFrame but I'm lazy atm)

There you go:

  let i = 0;
  function bump() {
      document.body.style.filter=`hue-rotate(${i+=2}deg)`, 16;
      requestAnimationFrame(bump);
  }
  requestAnimationFrame(bump);