diff --git a/changelog.html b/changelog.html
index 133894913b..fbed046fd0 100644
--- a/changelog.html
+++ b/changelog.html
@@ -78,6 +78,8 @@ Upcoming changes</a>
   <li class=bug>
     Memory exhaustion parsing large test stdio from Surefire.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-15382">issue 15382</a>)
+  <li class=rfe>
+    In celebration of the release number '486', background image will be 80486 for a week.
 </ul>
 </div><!--=END=-->
 <h3><a name=v1.485>What's new in 1.485</a> (2012/10/07)</h3>
diff --git a/core/src/main/java/hudson/Functions.java b/core/src/main/java/hudson/Functions.java
index 1ce8caa559..abf0fa47bb 100644
--- a/core/src/main/java/hudson/Functions.java
+++ b/core/src/main/java/hudson/Functions.java
@@ -1537,4 +1537,12 @@ public class Functions {
         DecimalFormat format = new DecimalFormat("##.00");
         return format.format(number) + " " + measure;
     }
+
+    /**
+     * 1.486 special
+     */
+    public static String getBackgroundImage() {
+        // for one week.
+        return System.currentTimeMillis() < 1350696100409L ? "i486.jpg" : "jenkins.png";
+    }
 }
diff --git a/core/src/main/resources/lib/layout/layout.jelly b/core/src/main/resources/lib/layout/layout.jelly
index 1fb3fec52b..4ef5f8bd80 100644
--- a/core/src/main/resources/lib/layout/layout.jelly
+++ b/core/src/main/resources/lib/layout/layout.jelly
@@ -206,7 +206,7 @@ ${h.initPageVariables(context)}
       </l:breadcrumbBar>
     </table>
     <table id="main-table" width="100%" height="70%" border="0"
-        style="background-image: url(${imagesURL}/jenkins.png);
+        style="background-image: url(${imagesURL}/${h.backgroundImage});
                background-repeat: no-repeat; background-position: bottom left;">
       <tr>
         <td id="side-panel" width="20%">
diff --git a/war/src/main/webapp/images/i486.jpg b/war/src/main/webapp/images/i486.jpg
new file mode 100644
index 0000000000..0810649b4a
Binary files /dev/null and b/war/src/main/webapp/images/i486.jpg differ