@akio0911 さんのお題 Ref: https://twitter.com/akio0911/status/617177548015845376

gistfile1.swift

protocol FloatingType {
	
	var floatValue:Double { get }
}

extension CGFloat : FloatingType {
	
	var floatValue:Double {
		
		return self.native
	}
}

extension Array where T : FloatingType {
	
	func color() -> UIColor {
		
		return UIColor(red:CGFloat(self[0].floatValue), green:1.0, blue:1.0, alpha:1.0)
	}
}