UIPageViewController Page Spacing + Background Color - ios

I have a couple of UIViewControllers embedded in a UIPageViewController.
Since the bouncing of the UIPageViewController apparently can't be disabled without ugly hacks, I would like to change the color that appears in the background when bouncing.
I know I can set the backgroundColor with view.backgroundColor, but I would like to have a different color for the background and the little space (Page Spacing) between the VCs.
How can I for example set a blue color for the spacing and a white color for the background that appears when bouncing?
Thank you!

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I have a UILabel that whose background I want to set to black with alpha component so that this label can have a transparent black background.
In the storyboard when I set the background to the colour I want with an alpha component even the text of the label that is in white colour becomes lighter with the alpha component.
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You can Do only With label make IBObject an write following line.
label.backgroundColor = UIColor.black.withAlphaComponent(0.4)
Instead of changing the alpha value, change the opacity of the label background color in storyboard.
For better understanding, I have taken an imageView and placed a label at the bottom of imageView and changed the background color of the label and textColor to white. At this stage you can't see the image behind the label.
Now, go to attributes inspector and select the label background color. There you can see the opacity and change it's value. Here I have made it 50%, you can change it to whatever you want between 0 to 100 until you get your desired transparency.
create the UIview with black background color and add the UIlabel inside the view and set the alpha to 0.5 of view . finally you get the black transparent, for e.g
if you need the label text in bold change the view hierarchy
place the UILabel fist then add the UIView.
Place the UILabelabove the UIView, not inside it.
Assume that we are talking about v1 the view that contains your label , if v1 is over another view that has bright colors then when your v1's alpha get lower your label white text color will become harder to see , the text color has nothing to do with the background alpha component , so you need to reconsider using the white color or the alpha component background or the view that is behind v1 make it darker that's all we can say

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