Install: https://gist.githubusercontent.com/Nemo157/b30e9687927117836b09773f73e7e1cc/raw/zulip-archive.rust-lang.org.user.css

zulip-archive.rust-lang.org.user.css

/* ==UserStyle==
@name           zulip-archive.rust-lang.org ayu-like
@namespace      https://gist.github.com/Nemo157/b30e9687927117836b09773f73e7e1cc
@version        1.0.2
==/UserStyle== */
@-moz-document domain("zulip-archive.rust-lang.org") {
    body {
        background-color: #0f1419;
    }

    body, hr {
        color: #5c6773;
    }

    body > h2, body > h3 {
        color: #ff7733;
    }

    body {
        display: grid;
        grid-template-columns: 1fr 2fr 0px;
    }

    h2, h3, hr, ul {
        grid-column: 1 / 3;
    }

    div:not(.msg):not(.codehilite) {
        color: #ffb44c;
        margin-bottom: 0;
        text-align: right;
    }

    .codehilite {
        background-color: rgb(25, 31, 38);
        padding: 0.8em 1em;
    }

    .codehilite pre { margin: 0; }

    .msg {
        max-width: 50em;
        color: #c5c5c5;
        margin-top: 0;
        margin-left: 2em;
        margin-bottom: 0.2em;
    }

    .msg p {
        padding: 0;
        margin: 0;
    }

    .msg h2, .msg h3 {
        font-size: 1.2em;
        margin: 0;
    }

    a {
        color: #0096cf;
        text-decoration: none;
    }

    div a[href^="https://zulip-archive.rust-lang.org"] {
        color: #e6e1cf;
        font-size: 0.6em;
    }

    .zl {
        color: #5c6773;
        font-size: 0.6em;
    }

    body {
        font-family: sans-serif;
        margin: 20px auto;
        line-height: 1.2;
        font-size: 18px;
        padding: 0 10px
    }

    a:hover {
        color: #3797db
    }
}