don't start colors animation when we click back button

content/hypno/colors/colors.js

@@ -28,6 +28,10 @@ function changeWord() {
     wordEl.style.color = newColor;
 }
 
+document.getElementById("controls").onclick = function (e) {
+    e.stopPropagation();
+}
+
 window.onclick = function () {
     if (!started) {
         started = true;