map_styles.json

[
  {
    "featureType": "landscape",
    "elementType": "all",
    "stylers": [
      {
        "hue": "#FFBB00"
      },
      {
        "saturation": 43.4
      },
      {
        "lightness": 37.6
      },
      {
        "gamma": 1
      }
    ]
  },
  {
    "featureType": "poi",
    "elementType": "all",
    "stylers": [
      {
        "hue": "#00FF6A"
      },
      {
        "saturation": -1.10
      },
      {
        "lightness": 11.2
      },
      {
        "gamma": 1
      }
    ]
  },
  {
    "featureType": "road.highway",
    "elementType": "all",
    "stylers": [
      {
        "hue": "#FFC200"
      },
      {
        "saturation": -61.8
      },
      {
        "lightness": 45.6
      },
      {
        "gamma": 1
      }
    ]
  },
  {
    "featureType": "road.arterial",
    "elementType": "all",
    "stylers": [
      {
        "hue": "#FF0300"
      },
      {
        "saturation": -100
      },
      {
        "lightness": 51.2
      },
      {
        "gamma": 1
      }
    ]
  },
  {
    "featureType": "road.local",
    "elementType": "all",
    "stylers": [
      {
        "hue": "#FF0300"
      },
      {
        "saturation": -100
      },
      {
        "lightness": 52
      },
      {
        "gamma": 1
      }
    ]
  },
  {
    "featureType": "water",
    "elementType": "all",
    "stylers": [
      {
        "color": "#016997"
      }
    ]
  }
]

static_map_style_generator.py

import json
import sys
from pprint import pprint

# data direct from https://snazzymaps.com map editor
with open(sys.argv[1]) as f:
    style_info = json.load(f)


def get_style(stylers, key):
    return next((v[key] for v in stylers if key in v), None)


def map_style(style):
    parts = []
    if style['featureType'] != 'all':
        parts.append('feature:{featureType}'.format(**style))
    if style['elementType'] != 'all':
        parts.append('element:{elementType}'.format(**style))
    stylers = style.get('stylers', {})
    visibility = get_style(stylers, 'visibility')
    if visibility != 'off':
        color = get_style(stylers, 'color')
        if color:
            parts.append('color:{}'.format(color.replace('#', '0x')))
        lightness = get_style(stylers, 'lightness')
        if lightness:
            parts.append('lightness:{}'.format(lightness))
        saturation = get_style(stylers, 'saturation')
        if saturation:
            parts.append('saturation:{}'.format(saturation))
        gamma = get_style(stylers, 'gamma')
        if gamma:
            parts.append('gamma:{}'.format(gamma))
    if visibility:
        parts.append('visibility:{}'.format(visibility))
    return 'style', '|'.join(parts)

pprint([map_style(s) for s in style_info])