I am trying to insert a pre-loaded UIStackView into another StackView.
In The pre-loaded UIStackView i have sub-views which i added programmatically.
The problem is that when i add buttons and set their color, they get white background, and no corner radius at all

I tried using "background = new UIColor(51,181,229,255)"
and "background = UIColor.FromCGColor(51,181,229,255)"

with same results..

```
        //TextFields
        UITextField oldPasswordTextField = new UITextField
        {
            Placeholder = "Old Password",
            BackgroundColor = UIColor.White,
            ClipsToBounds = true
        };

        UITextField newPasswordTextField = new UITextField
        {
            Placeholder = "New Password",
            BackgroundColor = UIColor.White,
            ClipsToBounds = true
        };

        UITextField repPasswordTextField = new UITextField
        {
            Placeholder = "Repeat New Password",
            BackgroundColor = UIColor.White,
            ClipsToBounds = true
        };

        //Buttons
        UIButton cancelButton = new UIButton();           
        cancelButton.SetTitle("Cancel", UIControlState.Normal);
        cancelButton.SetTitleColor(UIColor.White, UIControlState.Normal);
        cancelButton.BackgroundColor = UIColor.FromCGColor(new CoreGraphics.CGColor(51, 181, 229, 255));
        cancelButton.ClipsToBounds = true;

        UIButton submitButton = new UIButton();
        submitButton.SetTitle("Submit", UIControlState.Normal);
        submitButton.SetTitleColor(UIColor.White, UIControlState.Normal);
        //submitButton.BackgroundColor = new UIColor(51, 181, 229, 255);
        submitButton.ClipsToBounds = true;

        passwordChangeStackView.AddArrangedSubview(oldPasswordTextField);
        passwordChangeStackView.AddArrangedSubview(newPasswordTextField);
        passwordChangeStackView.AddArrangedSubview(repPasswordTextField);
        passwordChangeStackView.AddArrangedSubview(submitButton);
        passwordChangeStackView.AddArrangedSubview(cancelButton);
        passwordChangeStackView.AddArrangedSubview(activityIndicator);

```

MainStackView.InsertArrangedSubview(passwordChangeStackView, 2); //2 -> after related button

I need the buttons to be with my chosen color, with white text,
and all the subviews to have rounded corners... but i cant manage to get both to work.