Mpp rainbow notes

// ==UserScript==
// @name         Mpp rainbow notes
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        *.multiplayerpiano.com/*
// @match        *.mpp.terrium.net/*
// @grant        none
// ==/UserScript==

var count = 0;
var size = 128;
var rainbow = new Array(size);
var id = MPP.client.getOwnParticipant().id

for (var i = 0; i < size; i++) {
    var red = sin_to_hex(i, 0 * Math.PI * 2 / 3); // 0   deg
    var blue = sin_to_hex(i, 1 * Math.PI * 2 / 3); // 120 deg
    var green = sin_to_hex(i, 2 * Math.PI * 2 / 3); // 240 deg


    rainbow[i] = "#" + red + green + blue;
}


function sin_to_hex(i, phase) {
    var sin = Math.sin(Math.PI / size * 2 * i + phase);
    var int = Math.floor(sin * 127) + 128;
    var hex = int.toString(16);


    return hex.length === 1 ? "0" + hex : hex;
}
setInterval(function() {
    if (count > rainbow.length) count = 0;
			id = MPP.client.getOwnParticipant();
			id.color = rainbow[count]
    count++;
}, 33);