KFC is rolling out two new menu items in its Chinese franchises with the hope they'll help save sagging sales -- chicken sandwiches with black and pink buns.The fast food chain calls them the "Black Diamond Bacon Spicy Chicken Leg Burger" and the "Rose Cheese Chicken Leg Burger," respectively.KFC says they've been declining for the last three years and fell an alarming 10 percent in the last quarter alone.