There is a blog post with many examples of map created by users with the Style Wizard
Create your own by using the The Google Maps Styled Maps Wizard
Navigate to the map region you wish to use to preview your style. Jump to a particular location using the Enter a location field in the top right.
Select a type of feature to style in the Selectors panel.
If you only wish to style the Geometry or Labels for the selected feature type, select the required Element Type.
Select the combination of Stylers to apply to the selected feature type.
Once you are happy with the styling of the feature type, click the Add button in the Map Style panel to save the style and create a new style to work on.
Repeat Steps 2 to 5 to build up the set of styles for your map. Styles are applied in the order they are listed in the Map Style panel.
Select an existing style in the Map Style panel to edit it.
Delete a style by clicking on the trashcan icon to the right of the style number.
When you are happy with your Styled Map, click the Show JSON button to display the JSON object to pass to the style property of your MapOptions object in order to apply the style to a Maps API v3 Map.
To generate an example map with this style using the Static Maps API, click the Static Map button.
Google Maps v3 Style Wizard Tool: