Code Fragment: RBItem

enum Color {RED, BLACK};				// item colors
template <typename Key, typename Element>
class RBItem : public Item<Key,Element> {		// a RBTree item
private:
  Color col;						// node color
public:
  RBItem(const Key& k = Key(),
  	 const Element& e = Element(), Color c = RED)	// constructor
      : Item<Key,Element>(k, e), col(c) { }
  Color color() const { return col; }			// get color
  void setColor(Color c) { col = c; }			// set color
};