modified code to accomodate custom styles

Author: bhuveshsharma09

flask_googlemaps/__init__.py

@@ -47,6 +47,7 @@ def __init__(
         center_on_user_location=False,
         report_clickpos=False,
         clickpos_uri="",
+        styles="",
         **kwargs
     ):
         """Builds the Map properties"""
@@ -87,6 +88,8 @@ def __init__(
         self.cluster_gridsize = cluster_gridsize
 
         self.fit_markers_to_bounds = fit_markers_to_bounds
+        self.styles = styles
+
 
     def build_markers(self, markers):
         if not markers:

flask_googlemaps/templates/googlemaps/gmapjs.html

@@ -40,6 +40,7 @@
             rotateControl: {% if gmap.rotate_control %}true{% else %}false{% endif %},
             scrollwheel: {% if gmap.scroll_wheel %}true{% else %}false{% endif %},
             fullscreenControl: {% if gmap.fullscreen_control %}true{% else %}false{% endif %}
+            styles: {{ gmap.styles | tojson  }}
         });
 
         //center map location on user location