new toColor('mapbox.mapbox-streets-v8');
new toColor('mapbox.mapbox-streets-v8', {"saturation":0.5});
new toColor('mapbox.mapbox-streets-v8', {"saturation":1.5});
new toColor('mapbox.mapbox-streets-v8', {"brightness":0.5});
new toColor('mapbox.mapbox-streets-v8', {"brightness":1.5});
new toColor('mapbox.mapbox-streets-v8', {"brightness":1.5,"limit":["blue"]});