Removed global theme testing attributes from sample.

sample/src/main/res/values/styles.xml

@@ -6,9 +6,9 @@
         <item name="colorPrimaryDark">@color/material_indigo_600</item>
         <item name="colorAccent">@color/material_pink_500</item>
 
-        <item name="md_divider_color">@color/material_pink_500</item>
-        <item name="md_background_color">@color/material_blue_grey_800</item>
-        <item name="md_dark_theme">true</item>
+        <!--<item name="md_divider_color">@color/material_pink_500</item>-->
+        <!--<item name="md_background_color">@color/material_blue_grey_800</item>-->
+        <!--<item name="md_dark_theme">true</item>-->
 
     </style>