diff --git a/plugins/calendar/drivers/kolab/kolab_calendar.php b/plugins/calendar/drivers/kolab/kolab_calendar.php
index d631cbad..eb75bac7 100644
--- a/plugins/calendar/drivers/kolab/kolab_calendar.php
+++ b/plugins/calendar/drivers/kolab/kolab_calendar.php
@@ -90,10 +90,13 @@ class kolab_calendar
   /**
    * Return color to display this calendar
    */
-  public function get_color()
+  public function get_color($owner)
   {
     // TODO: read color from backend (not yet supported)
-    return '0000dd';
+    //temporary color deffirence between own calendars and the rest	
+    if ($owner == $_SESSION['username'])
+      return 'd63355';
+    return '1f9ebe';
   }
   
   
@@ -135,6 +138,7 @@ class kolab_calendar
       
       // resolve recurring events (maybe move to _fetch_events() for general use?)
       if ($event['recurrence']) {
+      	
         $recurrence = new Horde_Date_Recurrence($event['start']);
         $recurrence->fromRRule20(calendar::to_rrule($event['recurrence']));
         
@@ -169,6 +173,7 @@ class kolab_calendar
    * Create a new event record
    *
    * @see Driver:new_event()
+   * 
    * @return mixed The created record ID on success, False on error
    */
   public function insert_event($event)
diff --git a/plugins/calendar/drivers/kolab/kolab_driver.php b/plugins/calendar/drivers/kolab/kolab_driver.php
index 5898c9ad..74d34d89 100644
--- a/plugins/calendar/drivers/kolab/kolab_driver.php
+++ b/plugins/calendar/drivers/kolab/kolab_driver.php
@@ -71,7 +71,7 @@ class kolab_driver extends calendar_driver
                 'id' => $calendar->id,
                 'name' => $calendar->get_name(),
                 'editname' => $calendar->get_foldername(),
-                'color' => $calendar->get_color(),
+                'color' => $calendar->get_color($c_folder->_owner),
                 'readonly' => $c_folder->_owner != $_SESSION['username'],
               );
             }
diff --git a/plugins/calendar/skins/default/calendar.css b/plugins/calendar/skins/default/calendar.css
index 51d8c603..1a1dbfcd 100644
--- a/plugins/calendar/skins/default/calendar.css
+++ b/plugins/calendar/skins/default/calendar.css
@@ -22,7 +22,7 @@ body.calendarmain {
 	top: 37px;
 	left: 10px;
 	bottom: 0;
-	width: 230px;
+	width: 265px;
 }
 
 #datepicker {
@@ -41,9 +41,9 @@ body.calendarmain {
 
 #sidebartoggle {
 	position: absolute;
-	left: 244px;
+	left: 276px;
 	width: 8px;
-	top: 37px;
+	top: 27px;
 	bottom: 0;
 	background: url('images/toggle.gif') 0 48% no-repeat transparent;
 	cursor: pointer;
@@ -60,7 +60,7 @@ div.sidebarclosed {
 #calendar {
 	position: absolute;
 	top: 0;
-	left: 256px;
+	left: 290px;
 	right: 10px;
 	bottom: 0;
 }
@@ -539,4 +539,3 @@ div.fc-event-location {
 fieldset #calendarcategories div {
 	margin-bottom: 0.3em;
 }
-
diff --git a/plugins/kolab_core/rcube_kolab.php b/plugins/kolab_core/rcube_kolab.php
index 8378a2bf..d2c98add 100644
--- a/plugins/kolab_core/rcube_kolab.php
+++ b/plugins/kolab_core/rcube_kolab.php
@@ -86,6 +86,7 @@ class rcube_kolab
      * Get instance of a Kolab (XML) format object
      *
      * @param string Data type (contact,event,task,note)
+     *
      * @return object Horde_Kolab_Format_XML The format object
      */
     public static function get_format($type)
@@ -98,6 +99,7 @@ class rcube_kolab
      * Get a list of storage folders for the given data type
      *
      * @param string Data type to list folders for (contact,event,task,note)
+     *
      * @return array List of Kolab_Folder objects (folder names in UTF7-IMAP)
      */
     public static function get_folders($type)
@@ -112,6 +114,7 @@ class rcube_kolab
      *
      * @param string IMAP folder to access (UTF7-IMAP)
      * @param string Object type to deal with (leave empty for auto-detection using annotations)
+     *
      * @return object Kolab_Data The data storage object
      */
     public static function get_storage($folder, $data_type = null)
@@ -143,4 +146,80 @@ class rcube_kolab
         return asciiwords(strtr($folder, '/.', '--'));
     }
 
+    /**
+     * Deletes IMAP folder
+     *
+     * @param string $name Folder name (UTF7-IMAP)
+     *
+     * @return bool True on success, false on failure
+     */
+    public static function folder_delete($name)
+    {
+        self::setup();
+        $kolab  = Kolab_List::singleton();
+
+        $folder = $kolab->getFolder($name);
+        $result = $folder->delete();
+
+        if (is_a($result, 'PEAR_Error')) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Creates IMAP folder
+     *
+     * @param string $name    Folder name (UTF7-IMAP)
+     * @param string $type    Folder type
+     * @param bool   $default True if older is default (for specified type)
+     *
+     * @return bool True on success, false on failure
+     */
+    public static function folder_create($name, $type=null, $default=false)
+    {
+        self::setup();
+        $kolab  = Kolab_List::singleton();
+
+        $folder = new Kolab_Folder();
+        $folder->setList($kolab);
+        $folder->setFolder($name);
+
+        $result = $folder->save(array(
+            'type' => $type,
+            'default' => $default,
+        ));
+
+        if (is_a($result, 'PEAR_Error')) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Renames IMAP folder
+     *
+     * @param string $oldname Old folder name (UTF7-IMAP)
+     * @param string $newname New folder name (UTF7-IMAP)
+     *
+     * @return bool True on success, false on failure
+     */
+    public static function folder_rename($oldname, $newname)
+    {
+        self::setup();
+        $kolab  = Kolab_List::singleton();
+
+        $folder = $kolab->getFolder($oldname);
+        $folder->setFolder($newname);
+        $result = $kolab->rename($folder);
+
+        if (is_a($result, 'PEAR_Error')) {
+            return false;
+        }
+
+        return true;
+    }
+
 }