Can you get rid of opaque rectangle in a UIPickerView?

I'd like to remove this gray box in a UIPickerView.

I'm trying to recreate this.

If there is a way I'd greatly appreciate it.

Here's the code snippet. I'm not fluent in UIKit but I'd also love tips if there is anything you may see that could be improved. I know SwiftUI doesn't have the customizations that UIKit has and that's why I'm using UIKit.

var data = ["23","24","25","26","27","28","29"]struct CustomPicker: UIViewRepresentable {    @Binding var selected: String    func makeCoordinator() -> Coordinator {        return CustomPicker.Coordinator(parent1: self)    }    func makeUIView(context: UIViewRepresentableContext<CustomPicker>) -> UIPickerView {        let picker = UIPickerView()        picker.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)        picker.dataSource = context.coordinator        picker.delegate = context.coordinator        return picker    }    func updateUIView(_ uiView: UIPickerView, context: UIViewRepresentableContext<CustomPicker>) {    }    class Coordinator: NSObject, UIPickerViewDelegate, UIPickerViewDataSource {        var parent: CustomPicker        init(parent1: CustomPicker) {            parent = parent1        }        func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {            return data.count        }        func numberOfComponents(in pickerView: UIPickerView) -> Int {            return 1        }        func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {            let view = UIView(frame: CGRect(x: 0, y: 0, width: 155, height: 77))            let label = UILabel(frame: CGRect(x: 0, y: 0, width: view.bounds.width, height: view.bounds.height))            label.text = data[row]            label.textColor = UIColor(#colorLiteral(red: 0.1215686277, green: 0.01176470611, blue: 0.4235294163, alpha: 1))            label.textAlignment = .center            label.font = .systemFont(ofSize: 40, weight: .regular)            view.backgroundColor = .clear            view.addSubview(label)            view.clipsToBounds = true            view.layer.cornerRadius = view.bounds.height / 2            //Border Color//            view.layer.borderWidth = 2.5//            view.layer.borderColor = UIColor.white.cgColor            return view        }        func pickerView(_ pickerView: UIPickerView, widthForComponent component: Int) -> CGFloat {            return 155        }        //Height of row        func pickerView(_ pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat {            return 77        }        func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {            self.parent.selected = data[row]        }    }}