background color of view swiftui code example

Example 1: swiftui background color

Group {
	//Views inside the highest view in the hierarchy
}.background(Color.red.edgesIgnoringSafeArea(.all))

Example 2: how to change background color of stackview swift

extension UIStackView {
    func addBackground(color: UIColor) {
        let subView = UIView(frame: bounds)
        subView.backgroundColor = color
        subView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        insertSubview(subView, at: 0)
    }
}