diff --git a/web/gui/src/main/webapp/onos2.js b/web/gui/src/main/webapp/onos2.js
index 3dd930c..9fcd7f7 100644
--- a/web/gui/src/main/webapp/onos2.js
+++ b/web/gui/src/main/webapp/onos2.js
@@ -38,7 +38,7 @@
 
         var defaultOptions = {
             trace: false,
-            theme: 'light',
+            theme: 'dark',
             startVid: defaultVid
         };