&gt;
&lt;body&gt;
	&lt;div&gt;
		&lt;canvas id="myChart"&gt;&lt;/canvas&gt;
	&lt;/div&gt;
	&lt;p&gt;
		&lt;button id="randomizeData"&gt;Randomize Data&lt;/button&gt;
		&lt;button id="addDataset"&gt;Add Dataset&lt;/button&gt;
		&lt;button id="removeDataset"&gt;Remove Dataset&lt;/button&gt;
		&lt;button id="addData"&gt;Add Data&lt;/button&gt;
		&lt;button id="removeData"&gt;Remove Data&lt;/button&gt;
	&lt;/p&gt;
&lt;/body&gt;</pre>
			</div>
		</div>
	</div>

	<script>
		var chartColors = {
			red: 'rgb(255, 