Changed duration box stroke color to grey (like in the official app)

Author: darkon5

app/src/main/res/drawable/durationback.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
     <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
         <solid android:color="#000000" />
-        <stroke android:width="1dip" android:color="#4fa5d5"/>
+        <stroke android:width="1dip" android:color="#888"/>
     </shape>