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extension NSUserDefaults {
func colorForKey(key: String) -> UIColor? {
var color: UIColor?
if let colorData = dataForKey(key) {
color = NSKeyedUnarchiver.unarchiveObjectWithData(colorData) as? UIColor
return color
func setColor(color: UIColor?, forKey key: String) {
var colorData: NSData?
if let color = color {
colorData = NSKeyedArchiver.archivedDataWithRootObject(color)
setObject(colorData, forKey: key)
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