darkmode vs cgcolor

import from:

https://www.jessesquires.com/blog/2020/03/23/implementing-dark-mode-with-cgcolor/

private func _updateColors() { self.layer.borderColor = UIColor.customColor.cgColor}override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) { super.traitCollectionDidChange(previousTraitCollection) self._updateColors() self.setNeedsDisplay()}