Finished tool

a.html

@@ -24,9 +24,9 @@
 <body>
     <h3>Color Flipper</h3>
     <script src="a.js"></script>
-    <button id="green">green</button>
-    <button id="red">red</button>
-    <button id="blue">blue</button>
-    <button >random</button>
+    <button id="green" onclick=setColor('green')>green</button>
+    <button id="red"onclick=setColor('red')> red</button>
+    <button id="blue"onclick=setColor('blue')>blue</button>
+    <button onclick=randomColor()>random</button>
 </body>
 </html>