Custom keyboard extension appearance is always dark?

Question

When I run my custom keyboard, it's always being styled with my dark style. If I use they keyboard in Safari for example, this code returns yellow when it should be red. If I then pull down Spotlight it still returns yellow. What am I doing wrong here?

override func textDidChange(textInput: UITextInput) {
    self.nextKeyboardButton.backgroundColor = myColor
}

var myColor: UIColor {
    get {
        var proxy = textDocumentProxy as UITextDocumentProxy
        if proxy.keyboardAppearance == UIKeyboardAppearance.Light {
            return UIColor.redColor()
        } else {
            return UIColor.yellowColor()
        }
    }
}

Answer 1

The problem is proxy.keyboardAppearance won't always return .Light even if it is the light keyboard - it may return .Default. To solve the problem, I changed the conditional to check for .Dark else return a color appropriate for the light keyboard.