DynamicColor property wrapper type to remove boilerplate code when defining dynamic colors to adopt dark mode on iOS 13

DynamicColor.swift

@DynamicColor(lightVariant: .black, darkVariant: .white)
static var dynamicLabelColor: UIColor

@propertyWrapper
struct DynamicColor {
    let lightVariant: UIColor
    let darkVariant: UIColor

    var wrappedValue: UIColor {
        get {
            if #available(iOS 13.0, *) {
                return UIColor { (traitCollection: UITraitCollection) -> UIColor in
                    if traitCollection.userInterfaceStyle == .dark {
                        return self.darkVariant
                    }
                    else {
                        return self.lightVariant
                    }
                }
            }
            else {
                return self.lightVariant
            }
        }
    }
}

Awesome 👍

I think it'd be clearer if you return the color style as follows:

if traitCollection.userInterfaceStyle == .dark ? self.darkVariant : self.lightVariant

You can also omit the get statement and just return the value.