When you press the heart on the front of her diaper, different colors will appear! While the magic diaper checks for the surprise inside, has Baby Doll peed or pooped? The magic diaper will highlight the icon depending on the result.When you open the diaper a light simulating a stain will appear. Clean up Nenuco Baby Doll with all the accessories and put her diaper on again, the stain will dissapear magically!