SettingColorsWithTrailCollection.swift

lass UIViewBasicsController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
       
        self.view.backgroundColor = UIColor(named: "myColor")
        
        // Get the color value of system Colors through TraitCollection
        let yellow = UIColor.systemYellow
        let light = UITraitCollection(userInterfaceStyle: .light)
        let dark = UITraitCollection(userInterfaceStyle: .dark)
        
        let yellowLight = yellow.resolvedColor(with: light)
        let yellowDark = yellow.resolvedColor(with: dark)
        
        print(yellowLight)
        print(yellowDark)
        
    }
    
    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
        super.traitCollectionDidChange(previousTraitCollection)
        
        // Change custom color color Theme change
        if previousTraitCollection?.hasDifferentColorAppearance(comparedTo: self.traitCollection) ?? true {
            self.view.backgroundColor = UIColor(named: "myColor")
        }
    }
    
    
}