dule that exposes its defaults
        //changing the defaults from grays to an off-red and making the stroke
        //a bit thinner and opacity less
        var defaults = L.mapbox.simplestyle.defaults;
        defaults.fill = defaults.stroke = "#ff3c00";
        defaults["stroke-width"] = 1;
        defaults["fill-opacity"] = .3;


        var styleFeature = function(feature) {
            //point features will check for the simplestyle-spec styles of
            //marker-color and marker-size. We can't 