     baseLayers =
         Grayscale: grayscale
         Streets: streets
+        Satellite: satellite
 
     L.control.layers(baseLayers, overlays).addTo(map)
 


                        city.markers[set.id] = L
                            .polygon polygon,
                                color: color
                                fillColor: color
                                fillOpacity: 0.5

    colors =
        1: 'red'
        2: 'blue'
        3: 'green'
    colors[id]
