title: Frame OutlineColor not work in only Android, Xamarin Forms
body: <p>I am developing the app in Xamarin Forms and I have faced a bug that should be fixed long time ago. 
  I tried to set outline for frame and it works good on ios but doesn't work on android.</p>
  
  <p>Here is my xaml for Frame.</p>
  
  <pre><code>&lt;Frame
      HasShadow="true"
      CornerRadius="10"
      OutlineColor="Red"
      BackgroundColor="White"&gt;
      &lt;StackLayout 
          Orientation="Horizontal"&gt;
          &lt;Label
          Text="TEST"
          VerticalOptions="Center"/&gt;
          &lt;Label
          Text="For OUTLINE"
          VerticalOptions="Center"/&gt;
      &lt;/StackLayout&gt;
  &lt;/Frame&gt;
  </code></pre>
  
  <p>Thanks for any help!</p>