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Movable GUI to switch YouTube rainbow themes (Red, Orange, Yellow, Green, Blue, Purple, Pink, White, Black)
// ==UserScript==
// @name YouTube Rainbow Theme Switcher
// @namespace https://youtube.com/
// @version 1.0
// @description Movable GUI to switch YouTube rainbow themes (Red, Orange, Yellow, Green, Blue, Purple, Pink, White, Black)
// @author sonic
// @match *://*.youtube.com/*
// @icon https://www.youtube.com/s/desktop/fe2fda87/img/favicon.ico
// @grant GM_addStyle
// ==/UserScript==
(function() {
'use strict';
const themes = {
"Red": `
html { --yt-spec-general-background-a: #330000 !important; --yt-spec-general-background-b: #440000 !important; --yt-spec-text-primary: #ffcccc !important; }
`,
"Orange": `
html { --yt-spec-general-background-a: #331a00 !important; --yt-spec-general-background-b: #442200 !important; --yt-spec-text-primary: #ffe6cc !important; }
`,
"Yellow": `
html { --yt-spec-general-background-a: #333300 !important; --yt-spec-general-background-b: #4d4d00 !important; --yt-spec-text-primary: #ffffcc !important; }
`,
"Green": `
html { --yt-spec-general-background-a: #001a00 !important; --yt-spec-general-background-b: #003300 !important; --yt-spec-text-primary: #ccffcc !important; }
`,
"Blue": `
html { --yt-spec-general-background-a: #00001a !important; --yt-spec-general-background-b: #000033 !important; --yt-spec-text-primary: #cce6ff !important; }
`,
"Purple": `
html { --yt-spec-general-background-a: #1a001a !important; --yt-spec-general-background-b: #330033 !important; --yt-spec-text-primary: #f0ccff !important; }
`,
"Pink": `
html { --yt-spec-general-background-a: #1a0010 !important; --yt-spec-general-background-b: #33001a !important; --yt-spec-text-primary: #ffd6e6 !important; }
`,
"White": `
html { --yt-spec-general-background-a: #e6e6e6 !important; --yt-spec-general-background-b: #f2f2f2 !important; --yt-spec-text-primary: #000 !important; }
`,
"Black": `
html { --yt-spec-general-background-a: #000 !important; --yt-spec-general-background-b: #111 !important; --yt-spec-text-primary: #fff !important; }
`
};
const styleEl = document.createElement("style");
document.head.appendChild(styleEl);
function applyTheme(themeName) {
if (!themes[themeName]) return;
styleEl.innerHTML = themes[themeName];
localStorage.setItem("ytRainbowTheme", themeName);
}
// Load saved theme
const saved = localStorage.getItem("ytRainbowTheme") || "Red";
applyTheme(saved);
// Create GUI
const gui = document.createElement("div");
gui.id = "yt-theme-switcher";
gui.innerHTML = `<b>🎨 Themes</b><br>` +
Object.keys(themes).map(t => `<button data-theme="${t}">${t}</button>`).join(" ");
document.body.appendChild(gui);
GM_addStyle(`
#yt-theme-switcher {
position: fixed;
top: 100px;
left: 20px;
background: rgba(0,0,0,0.8);
color: white;
padding: 10px;
border-radius: 8px;
z-index: 999999;
font-size: 14px;
user-select: none;
cursor: move;
}
#yt-theme-switcher button {
margin: 2px;
padding: 5px 8px;
background: #333;
color: white;
border: 1px solid #555;
border-radius: 4px;
cursor: pointer;
}
#yt-theme-switcher button:hover {
background: #555;
}
@media (max-width: 600px) {
#yt-theme-switcher {
top: 60px;
left: 10px;
font-size: 12px;
padding: 6px;
}
#yt-theme-switcher button {
padding: 3px 5px;
font-size: 12px;
}
}
`);
// Draggable GUI
let isDragging = false, offsetX, offsetY;
gui.addEventListener("mousedown", e => {
isDragging = true;
offsetX = e.clientX - gui.offsetLeft;
offsetY = e.clientY - gui.offsetTop;
});
document.addEventListener("mousemove", e => {
if (isDragging) {
gui.style.left = (e.clientX - offsetX) + "px";
gui.style.top = (e.clientY - offsetY) + "px";
}
});
document.addEventListener("mouseup", () => isDragging = false);
// Theme button click
gui.querySelectorAll("button").forEach(btn => {
btn.addEventListener("click", () => applyTheme(btn.dataset.theme));
});
})();