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iOS Swift 2.0 Protocols Swift 2.0 Protocols Protocols With Methods

Not sure what argument to pass in for it to be correct.

I might be writing this wrong, but I believe, I'm calling the method that I built into the protocol. Then I have to pass in an argument to fulfill the method. This code works in Xcode, but it is not working here..... What am I doing wrong?

// Declare protocol here
// Declare protocol here
protocol ColorSwitchable {
    func switchColor(color: Color)

enum LightState {
    case On, Off

enum Color {
    case RGB(Double, Double, Double, Double)
    case HSB(Double, Double, Double, Double)

class WifiLamp {
    let state: LightState
    var color: Color

    init() {
        self.state = .On
        self.color = .RGB(0,0,0,0)

        func switchColor(color: Color) {
            return switchColor(.RGB(088, 255, 255, 255))