Updates

sample/src/main/res/layout/dialog_color_chooser.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:gravity="center_horizontal">