Maps Styles decoded for Google based on https://github.com/julienben/gmaps-apistyle-encoder

gmaps-apistyle-encoder.py

styleparse_types = {"all": "0", "administrative": "1", "administrative.country": "17",
                    "administrative.land_parcel": "21", "administrative.locality": "19",
                    "administrative.neighborhood": "20", "administrative.province": "18", "landscape": "5",
                    "landscape.man_made": "81", "landscape.natural": "82", "poi": "2", "poi.attraction": "37",
                    "poi.business": "33", "poi.government": "34", "poi.medical": "36", "poi.park": "40",
                    "poi.place_of_worship": "38", "poi.school": "35", "poi.sports_complex": "39", "road": "3",
                    "road.arterial": "50", "road.highway": "49", "road.local": "51", "transit": "4",
                    "transit.line": "65", "transit.station": "66", "water": "6"}

styleparse_elements = {"all": "a", "geometry": "g", "geometry.fill": "g.f", "geometry.stroke": "g.s", "labels": "l",
                       "labels.icon": "l.i", "labels.text": "l.t", "labels.text.fill": "l.t.f",
                       "labels.text.stroke": "l.t.s"}

styleparse_stylers = {"color": "p.c", "gamma": "p.g", "hue": "p.h", "invert_lightness": "p.il", "lightness": "p.l",
                      "saturation": "p.s", "visibility": "p.v", "weight": "p.w"}


def decode_style(styles: list) -> str:
    parsed_style = ""

    for style in styles:
        if style.get('featureType'):
            parsed_style += "s.t:" + styleparse_types[style.get("featureType")] + "|"

        if style.get('elementType'):
            parsed_style += "s.e:" + styleparse_elements[style.get("elementType")] + "|"

        for styler in style.get("stylers"):
            keys = []
            for k in styler:
                if k == "color" and len(styler[k]) == 7:
                    styler[k] = "#ff" + str(styler[k][1:])
                parsed_style += styleparse_stylers[k] + ":" + str(styler[k]) + "|"
                
        parsed_style += ","
        
    from urllib.parse import quote
    
    return quote(parsed_style)

if __name__ == '__main__':
    styles = [
  {
    "elementType": "geometry",
    "stylers": [
      {
        "color": "#1d2c4d"
      }
    ]
  },
  {
    "elementType": "labels",
    "stylers": [
      {
        "visibility": "off"
      }
    ]
  },
  {
    "elementType": "labels.text.fill",
    "stylers": [
      {
        "color": "#8ec3b9"
      }
    ]
  },
  {
    "elementType": "labels.text.stroke",
    "stylers": [
      {
        "color": "#1a3646"
      }
    ]
  },
  {
    "featureType": "administrative.country",
    "elementType": "geometry.stroke",
    "stylers": [
      {
        "color": "#4b6878"
      }
    ]
  },
  {
    "featureType": "administrative.land_parcel",
    "stylers": [
      {
        "visibility": "off"
      }
    ]
  },
  {
    "featureType": "administrative.land_parcel",
    "elementType": "labels.text.fill",
    "stylers": [
      {
        "color": "#64779e"
      }
    ]
  },
  {
    "featureType": "administrative.neighborhood",
    "stylers": [
      {
        "visibility": "off"
      }
    ]
  },
  {
    "featureType": "administrative.province",
    "elementType": "geometry.stroke",
    "stylers": [
      {
        "color": "#4b6878"
      }
    ]
  },
  {
    "featureType": "landscape.man_made",
    "elementType": "geometry.stroke",
    "stylers": [
      {
        "color": "#334e87"
      }
    ]
  },
  {
    "featureType": "landscape.natural",
    "elementType": "geometry",
    "stylers": [
      {
        "color": "#023e58"
      }
    ]
  },
  {
    "featureType": "poi",
    "elementType": "geometry",
    "stylers": [
      {
        "color": "#283d6a"
      }
    ]
  },
  {
    "featureType": "poi",
    "elementType": "labels.text.fill",
    "stylers": [
      {
        "color": "#6f9ba5"
      }
    ]
  },
  {
    "featureType": "poi",
    "elementType": "labels.text.stroke",
    "stylers": [
      {
        "color": "#1d2c4d"
      }
    ]
  },
  {
    "featureType": "poi.park",
    "elementType": "geometry.fill",
    "stylers": [
      {
        "color": "#023e58"
      }
    ]
  },
  {
    "featureType": "poi.park",
    "elementType": "labels.text.fill",
    "stylers": [
      {
        "color": "#3C7680"
      }
    ]
  },
  {
    "featureType": "road",
    "elementType": "geometry",
    "stylers": [
      {
        "color": "#304a7d"
      }
    ]
  },
  {
    "featureType": "road",
    "elementType": "labels.text.fill",
    "stylers": [
      {
        "color": "#98a5be"
      }
    ]
  },
  {
    "featureType": "road",
    "elementType": "labels.text.stroke",
    "stylers": [
      {
        "color": "#1d2c4d"
      }
    ]
  },
  {
    "featureType": "road.highway",
    "elementType": "geometry",
    "stylers": [
      {
        "color": "#2c6675"
      }
    ]
  },
  {
    "featureType": "road.highway",
    "elementType": "geometry.stroke",
    "stylers": [
      {
        "color": "#255763"
      }
    ]
  },
  {
    "featureType": "road.highway",
    "elementType": "labels.text.fill",
    "stylers": [
      {
        "color": "#b0d5ce"
      }
    ]
  },
  {
    "featureType": "road.highway",
    "elementType": "labels.text.stroke",
    "stylers": [
      {
        "color": "#023e58"
      }
    ]
  },
  {
    "featureType": "transit",
    "elementType": "labels.text.fill",
    "stylers": [
      {
        "color": "#98a5be"
      }
    ]
  },
  {
    "featureType": "transit",
    "elementType": "labels.text.stroke",
    "stylers": [
      {
        "color": "#1d2c4d"
      }
    ]
  },
  {
    "featureType": "transit.line",
    "elementType": "geometry.fill",
    "stylers": [
      {
        "color": "#283d6a"
      }
    ]
  },
  {
    "featureType": "transit.station",
    "elementType": "geometry",
    "stylers": [
      {
        "color": "#3a4762"
      }
    ]
  },
  {
    "featureType": "water",
    "elementType": "geometry",
    "stylers": [
      {
        "color": "#0e1626"
      }
    ]
  },
  {
    "featureType": "water",
    "elementType": "labels.text.fill",
    "stylers": [
      {
        "color": "#4e6d70"
      }
    ]
  }
]

    print(decode_style(styles))