diff --git a/ember-cli-build.js b/ember-cli-build.js
index <HASH>..<HASH> 100644
--- a/ember-cli-build.js
+++ b/ember-cli-build.js
@@ -1,10 +1,12 @@
-/*jshint node:true*/
+/* jshint node:true*/
 /* global require, module */
-var EmberAddon = require('ember-cli/lib/broccoli/ember-addon');
+let EmberAddon = require('ember-cli/lib/broccoli/ember-addon');
 
 module.exports = function(defaults) {
-  var app = new EmberAddon(defaults, {
-    // Add options here
+  let app = new EmberAddon(defaults, {
+    flatpickr: {
+      theme: 'dark'
+    }
   });
 
   /*
Try to set theme for dummy app