chess-com-styling.js

// ==UserScript==
// @name         Chess.com Style Customizer
// @namespace    https://gist.github.com/Adriandmen/
// @version      1.0.1
// @description  Simple style injection script.
// @author       Adnan_2
// @icon         https://www.google.com/s2/favicons?sz=64&domain=githubusercontent.com
// @grant        none
// @match        https://www.chess.com/*
// @downloadURL  https://gist.githubusercontent.com/Adriandmen/debf719f4a62a62d7733fb86944b541b/raw/chess-com-styling.js
// @updateURL    https://gist.githubusercontent.com/Adriandmen/debf719f4a62a62d7733fb86944b541b/raw/chess-com-styling.js
// ==/UserScript==

(function () {
    'use strict';
    let head = document.head.innerHTML;

    document.head.innerHTML = head + `
    <style>
        :root {
            --custom-dark-username-color: #000000;
        }

        .board-layout-player .user-username-white,
        .board-layout-player .user-tagline-white,
        .board-layout-player .user-username-component {
            color: var(--custom-dark-username-color) !important;
        }
    </style>
    `
})();