colorized diffs in bulletin entry preview

application/views/sidebars/bulletinPreview.xhtml

 <div id="creqNavigation">
     <h4>Bulletin Preview</h4>
-    <?php echo $this->bulletinEntry($this->course); ?>
+    <?php
+    $originalCourse = $this->course->getParentGeneration(true);
+    if ($originalCourse) {
+        echo $this->bulletinEntryDiff($originalCourse, $this->course);
+    } else {
+        echo $this->bulletinEntry($this->course);
+    }
+    ?>
 </div>
\ No newline at end of file

document_root/css/common.oss

@@ -290,3 +290,17 @@ ul.horizontal_menu {
         }
     }
 }
+
+#creqSidebar {
+
+    .bulletinEntry {
+        ins {
+            color: #080;
+            text-decoration: none;
+        }
+
+        del {
+            color: #800;
+        }
+    }
+}