class HikingBootsLow_ColorBase extends Shoes_Base {};
class HikingBootsLow_Black extends HikingBootsLow_ColorBase {};
class HikingBootsLow_Blue extends HikingBootsLow_ColorBase {};
class HikingBootsLow_Beige extends HikingBootsLow_ColorBase {};
class HikingBootsLow_Grey extends HikingBootsLow_ColorBase {};