PythonAnyDark/script.user.js

// ==UserScript==
// @name         PythonAnyDark
// @namespace    http://tampermonkey.net/
// @version      1
// @description  Darkmode for PythonAnywhere dashboard
// @author       Swee
// @match        *://www.pythonanywhere.com/*
// @grant        none
// @run-at       document-body
// ==/UserScript==

const style = document.createElement("style");
style.innerHTML = `
body, .primary-navbar .active a, .navbar, .ui-dialog {
background: #0f161c !important;
color: white !important;
}
.ui-widget-content, .ui-dialog-title, .dashboard-panel__headline a, .text-muted, h1 small {
color: white;
}
input, .form-control, .splitter-bar, .splitter-pane, .active li {
background: black;
color: white;
}
.ui-state-default, .ui-widget-content .ui-state-default {
background: black;
color: white;
}
.ui-dialog-titlebar-close {
background: red !important;
border-radius: 100%;
border-width: 0px;
color: white;
}
.ui-icon-closethick {
display: none;
}
.ui-widget-header {
background: none;
border: none;
}
.btn, .btn-default, table, .table-striped>tbody>tr:nth-of-type(odd) {
background: #0f161c !important;
}
.well {
background: black !important;
}
.alert-warning {
background: #2b1500;
}
tr.hoverable:hover {
background: #013e6d !important;
}
.pale, i.pale, .directory_listing_table {
color: white !important;
opacity: 1;
}
/* Pricing */
.beginner_pane, .pricing_table ul.Free li:nth-child(2), .pricing_table ul.Free li.pricing_button {
background: black;
border: solid;
border-color: orange;
border-width: 1px;
}
.pricing_table ul {
background: none;
}
ul.Free li:first-child {
background: #2b1500;
}
.pricing_table ul li:nth-child(2), .pricing_table ul li, .pricing_table ul li, .pricing_pane {
background: black;
}
.modal-content {
background: #0f161c !important;
}
.close {
color: white;
opacity: 1;
}
.ui-slider {
background: black;
}
`;
document.body.appendChild(style);

// Totally didn't take this code from Stack Overflow :3
function waitForElm(selector) {
    return new Promise(resolve => {
        if (document.querySelector(selector)) {
            return resolve(document.querySelector(selector));
        }

        const observer = new MutationObserver(mutations => {
            if (document.querySelector(selector)) {
                observer.disconnect();
                resolve(document.querySelector(selector));
            }
        });

        // If you get "parameter 1 is not of type 'Node'" error, see https://stackoverflow.com/a/77855838/492336
        observer.observe(document.body, {
            childList: true,
            subtree: true
        });
    });
}
waitForElm('.ace_gutter').then((elm) => {
    // Set the theme of Ace Editor
    Anywhere.Editor.editor.setOption("theme", "ace/theme/tomorrow_night")
});