Just as an FYI for those that wonder. I use Mozilla on Windows most of the time. A few months back I was having some eye issues and had to adapt the look and feel of my software to be high contrast at a larger size. I settled on black backgrounds with white text. I left the formatting override in place when I found it makes more of the internet's crappy web developer's pages look decent. So as is my entire internet "experience" looks mostly like the "Dark" theme here except without all the neon. It is pleasant on my (now better) eyes and I never get assaulted with weird formatting, ever.

Here's my local CSS file that overrides everything. It turns out that complying with this sort of thing also makes the site friendlier to other sight impaired people. So... if you want to be nice to people who can't see right, make sure your markup works when passed through this.

* {
    color: white !important;
    background-color: black !important;
    FONT-FAMILY: sans-serif;
    FONT-SIZE: 13px;
    FONT-WEIGHT: normal;
}
a { text-decoration: underline; }
a:link { background-color: #000; }
a:visited { background-color: #131; text-decoration: strikethrough; }
form { display: inline; }
textarea {
    width: 100%;
    height: 25em;
}
pre { font-family: monospace; }
tt * {
    font-family: monospace;
    color: green;
}
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