When evaluating this code in an org-mode document:
const sq = x => x * x; const cube = x => sq(sq(x)); return cube(4);
A list of sites that don't set the css
background-color property but do set the font
color. Or do set the
background-color but don't set the font
color. That is, it wasn't done by choice.
Change the default colors in your browser, and the internet goes bananas. Modifying defaults is not unreasonable - switching black and white can help readablilty at night, and stops the bright flash-of-unstyled-content as a page is loading. It also messes up a web page's design if someone forgets to include basic css properties!