[
    {
        "featureType": "all",
        "elementType": "all",
        "stylers": [
            {
                "invert_lightness": true
            },
            {
                "saturation": 10
            },
            {
                "lightness": 30
            },
            {
                "gamma": 0.5
            },
            {
                "hue": "#435158"
            }
        ]
    }
]