public void manageAttributes(ZoneAttributes attr){
  zones.add(attr);
  attr.put("color_method","multiply");
  setZoneColor(attr,currentColor);
}

public void manageAttributes ( ZoneAttributes attr ) { zones . add ( attr ) ; attr . put ( "color_method" , "multiply" ) ; setZoneColor ( attr , currentColor ) ; }
make a zone color managed by the daylight colorer .
