Make the bg color of the gist editor gray

// ==UserScript==
// @name         Make the bg color of the gist editor gray
// @version      2024-05-03
// @description  Fix white font color on white txt editor bg
// @match        https://gist.github.com/*
// @grant        GM_addStyle
// @run-at       document-end
// ==/UserScript==

GM_addStyle(`
    div.CodeMirror.cm-s-github-light {
        background-color: gray!important;
    }
    .cm-s-github-light .CodeMirror-gutters {
        background-color: gray!important;
    }
    .cm-s-github-light .CodeMirror-lines {
        background-color: gray!important;
    }
`);