#world {
  polygon-fill:#CCC;
}

#world[NAME='United States'] {
  polygon-fill:#F00;
  
  [BLUE='red'] {
  
  }
  
}

#countries .countries .two {
  polygon-fill:#0FF;
}

#countries, #world {
  polygon-fill:#F0F;
  polygon-opacity: 0.5;
}


#countries, #countries.foo.bar.baz {}