Sneakers_ColorBase.c
class Sneakers_ColorBaseclass Sneakers_Blackclass Sneakers_Grayclass Sneakers_Greenclass Sneakers_Redclass Sneakers_White
class Sneakers_ColorBase extends Shoes_Base {};
class Sneakers_Black extends Sneakers_ColorBase {};
class Sneakers_Gray extends Sneakers_ColorBase {};
class Sneakers_Green extends Sneakers_ColorBase {};
class Sneakers_Red extends Sneakers_ColorBase {};
class Sneakers_White extends Sneakers_ColorBase {};