public protocol Gradientable {
    public func set(options: GradientableOptions)
    public func set(animation: GradientableAnimation)
}

public struct GradientableOptions {
	var colors: [UIColor]?
	var locations: [NSNumber]?
	var direction: GradientableOptionsDirection?
}

public struct GradientableAnimation {
	var from: [UIColor]?
	var to: [UIColor]
	var duration: TimeInterval = 0.4
}