diff --git a/Demo/DemoListViewController.swift b/Demo/DemoListViewController.swift
index 3af643a..2810022 100644
--- a/Demo/DemoListViewController.swift
+++ b/Demo/DemoListViewController.swift
@@ -126,6 +126,8 @@ class DemoListViewController: UITableViewController, NohanaImagePickerController
     
     @objc
     func showCustomUIPicker() {
+        ColorConfig.backgroundColor = UIColor.lightGray
+        
         let picker = NohanaImagePickerController()
         picker.delegate = self
         picker.assetBundle = Bundle.main
diff --git a/README.md b/README.md
index 768bfa3..4bed6f1 100644
--- a/README.md
+++ b/README.md
@@ -64,8 +64,13 @@ picker.canPickAsset = { (asset:Asset) -> Bool in
     return false
 }
 
+// If set to Bundle Object, You can change 'NohanaImagePicker.strings' and 'NohanaImagePicker.xcassets'.
+picker.assetBundle = Bundle.main
+
 // Color
-ColorConfig.backgroundColor = UIColor.redColor()
+ColorConfig.backgroundColor = UIColor.lightGray
+ColorConfig.emptyIndicator = UIColor.lightGray
+ColorConfig.AlbumList.momentCellSeparator = UIColor.lightGray
 ```
 
 ## Requirements