mcuuidutils.js

var PNGImage = require('pngjs-image');
var pad = require('pad-left');
var request = require('request');
function getColoursFromUUID(code, topad, callback) {
	var colours = []; // Array of colours
	PNGImage.readImage(('https://crafatar.com/avatars/' + code + '?size=8'), // Url to get heads 
	function(err, image) {
	if (err) throw err;
	var colour; // Variable colour is stored in on retreival from image
	for (var i = 0; i < image.getHeight(); i++) { // For every line of pixels (height)
		for (var j = 0; j < image.getWidth(); j++) { // For every pixel
			colour = (image.getColor(j, i)).toString(16); // Get a Hex colour
			colour = pad(colour, 6, 0) // Make it full width
			if (topad) { // Whether to add hex colour symbol
				colour = "#" + colour;
			}
			colours.push(colour); // And add to the array of colours
		}
	}
	if (callback) {
		callback(colours);
	}
});	
}
function getUUIDFromUsername(username, callback) {
	request('http://minecraft-techworld.com/admin/api/uuid?action=uuid&username=' + username, function(error, response, body) {
		if (error) throw error;
		if (!error && response.statusCode == 200) {
			//console.log((JSON.parse(body)).output);
			if (callback) {
				var uuid = ((JSON.parse(body)).output);
				callback(uuid);
			}
		}
	});
}
// Example
getUUIDFromUsername("01_", uuid => {
	getColoursFromUUID(uuid, true, colours => {
	console.log(colours);
});
});