anchor.diff:  Now make a change to the application.
   First, replace the word "Blue" on the web page with "Green," then build a new
   WAR file for the application.
  -Run `cf push` again, but use a different name for the application and provide a
  -different, temporary route:
  +Run `cf push` again, but use the name "Green" for the application and provide a
  +different subdomain to create a temporary route:
   
   <pre class="terminal">
  -cf push --path target/demo-time.war --name Green --host demo-time-temp
  +cf push Green -p target/demo-time.war -n demo-time-temp
   </pre>
   
   After this cf push:
   
   * Two instances of our application are now running on Cloud Foundry: the
   original Blue and the updated Green.
  -* The CF Router still sends all traffic for demo-time.example.com traffic to
  +* The CF Router still sends all traffic for `demo-time.example.com` traffic to
   Blue.
  -The router now also sends any traffic for demo-time-temp.example.com to Green.
  +The router now also sends any traffic for `demo-time-temp.example.com` to Green.
   
   <%= image_tag("../images/blue-green/blue-green.png") %>
   
  
positive.code: This app is a web page that displays the words "Blue time" and the date/time on
  the server.
  
  ### <a id='push-an-app'></a>Step 1: Push an App ###
  Use the `cf` command-line interface to push the application.
  Name the application "Blue" with the subdomain "demo-time."
  
  <pre class="terminal">
  cf push --path target/demo-time.war --name Blue --host demo-time
  </pre>
  
  As shown in the graphic below:
  
  * Blue is now running on Cloud Foundry.
  * The CF Router sends all traffic for demo-time.example.com traffic to Blue.
  
  <%= image_tag("../images/blue-green/blue.png") %>
  
  
negative.code: 
  Now that both apps are up and running, switch the router so all incoming
  requests go to the Green app *and* the Blue app.
  Do this by mapping the original URL route (`demo-time.example.com`) to the Green
  application.
  
  <pre class="terminal">
  cf map-route Green example.com -n demo-time
  Binding demo-time.example.com to Green... OK
  </pre>
  
  After the cf map:
  
  * The CF Router continues to send traffic for `demo-time-temp.com` to Green.
  * The CF Router immediately begins to load balance traffic for
  `demo-time.example.com` between Blue and Green.
  
  <%= image_tag("../images/blue-green/map.png") %>
  
  