diff --git a/livehelperchat.admin.inc b/livehelperchat.admin.inc
index 31e4e41..6fa2a34 100644
--- a/livehelperchat.admin.inc
+++ b/livehelperchat.admin.inc
@@ -110,6 +110,11 @@ function livehelperchat_admin_settings_form() {
     '#title' => t('Department ID'),
     '#default_value' => variable_get('livehelperchat_department_id', ''),
   );
+  $form['widget']['livehelperchat_theme'] = array(
+    '#type' => 'textfield',
+    '#title' => t('Theme'),
+    '#default_value' => variable_get('livehelperchat_theme', ''),
+  );
   $form['widget']['livehelperchat_identifier'] = array(
     '#type' => 'textfield',
     '#title' => t('Chat identifier'),
diff --git a/livehelperchat.module b/livehelperchat.module
index 7eb6229..7e2d65d 100644
--- a/livehelperchat.module
+++ b/livehelperchat.module
@@ -141,6 +141,9 @@ function livehelperchat_page_alter(&$page) {
   if ($val = variable_get('livehelperchat_department', FALSE)) {
     $urloptions['department'] = $val;
   }
+  if ($val = variable_get('livehelperchat_theme', FALSE)) {
+    $urloptions['theme'] = $val;
+  }
   if ($val = variable_get('livehelperchat_identifier', FALSE)) {
     $urloptions['identifier'] = $val;
   }