I'm having trouble using UIVibrancyEffect for my UIButtons in iOS widgets today. I want them to like the default “Change” button in the notification center. Today section:

As you can see in the screenshot, the default button is bright and looks much better.
I tried replacing the widget Viewwith the UIVisualEffectViewfollowing:
UIVisualEffectView effectView = new UIVisualEffectView(UIVibrancyEffect.CreateForNotificationCenter ());
effectView.Frame = this.View.Bounds;
effectView.AutoresizingMask = this.View.AutoresizingMask;
UIView oldView = this.View;
this.View = effectView;
effectView.ContentView.AddSubview(oldView);
this.View.TintColor = UIColor.Clear;
And it seems to work, but the names of my buttons also become bright (I want them to remain black):

Is there a way to prevent button shortcuts from appearing when using UIVibrancyEffect? A.
I should also add that I am using Xamarin.iOS.