op with a 0-transparancy color
// to create a blur-like effect.
                        'heatmap-color': [
                            'interpolate',
                            ['linear'],
                            ['heatmap-density'],
                            0,
                            'rgba(255,255,204,0)',
                            0.2,
                            "rgb(254, 224, 135)" ,
                            0.4,
                            'rgb(254, 171, 75)',
                         