I love the design on the Development Seed homepage, where they've used a grayscale basemap with bold 3D-style graphic markers.
I'd like to emulate this look+feel (for a personal, just-for-fun project) using freely available tools such as the Google Maps API. I need the ability to change the marker overlays rapidly, so they would need to draw dynamically over the basemap.
Is it possible to achieve a similar grayscale, terrain-based backdrop using Google Maps?
The Google Maps API Styling documentation shows how to reduce the saturation of the topo map, but I can't see an option to do it with the Terrain map.
I think I can emulate the bold graphics using the complex Icons sample as a starting point but would welcome any suggestions.