Xamarin Forms (iOS) - Change Transparency of Keyboard Background

Question

I have a Xamarin Forms project, where I've created a custom renderer for a Picker and Entry (both of which bring up a keyboard when focused). I want to customize a couple things about the keyboard. You can see that the background of a keyboard (in a Picker or Entry when focused) is semi-transparent:

and

How do I control the transparency of the background?

One thing I'm confused on is in my custom renderer, how to affect the Picker or Entry field vs. the Keyboard that comes up when you focus on the field.

Answer 1

Not sure if this will work:

var cl = UIColor.FromRGBA(0, 0, 0, 0.5f);
t.BackgroundColor = cl;

Where t = YourPickerView or PickerRenderer.