1. Find your favorite map style here: snazzymaps.com

2. E.g. blue water

3. Click “Extend Code” 

4. Copy Code (without the line: JAVASCRIPT STYLE ARRAY: ) 

[
    {
        "featureType": "administrative",
        "elementType": "labels.text.fill",
        "stylers": [
            {
                "color": "#444444"
            }
        ]
    },
    {
        "featureType": "landscape",
        "elementType": "all",
        "stylers": [
            {
                "color": "#f2f2f2"
            }
        ]
    },
    {
        "featureType": "poi",
        "elementType": "all",
        "stylers": [
            {
                "visibility": "off"
            }
        ]
    },
    {
        "featureType": "road",
        "elementType": "all",
        "stylers": [
            {
                "saturation": -100
            },
            {
                "lightness": 45
            }
        ]
    },
    {
        "featureType": "road.highway",
        "elementType": "all",
        "stylers": [
            {
                "visibility": "simplified"
            }
        ]
    },
    {
        "featureType": "road.arterial",
        "elementType": "labels.icon",
        "stylers": [
            {
                "visibility": "off"
            }
        ]
    },
    {
        "featureType": "transit",
        "elementType": "all",
        "stylers": [
            {
                "visibility": "off"
            }
        ]
    },
    {
        "featureType": "water",
        "elementType": "all",
        "stylers": [
            {
                "color": "#46bcec"
            },
            {
                "visibility": "on"
            }
        ]
    }
]