使用谷歌地图这真的不容易，因为@oezi说你需要为每个你想要着色的国家构建覆盖图，坦率地说听起来像是一团糟。

但是，如果您不需要Google地图的所有功能，也许可以使用地图图表来自精彩的 Google图表工具（又名 Chart API 强>）。您可以在交互式图表向导

2017 UPDATE ：这个答案相当古老，图表API已被Google弃用。您可以使用 Google图表API 中的 Geocharts ： p>

https：//开发人员.google.com / chart / interactive / docs / gallery / geochart

希望这有助于您！

Does anyone know how to give a different color to each country in a google map?

e.g:

in the world map

Blue overlay to UK, then RED china...etc

I wonder if google provide API to give color to each country

Thanks

Using Google Maps this is really not easy, as @oezi said you would need to build overlays of every country you want to color, which frankly sounds like a mess.

But if you don't need all of the functionalities of Google Maps, perhaps you can use a Map Chart from the fantastic Google Chart Tools (aka Chart API). You can check and tinker with a working example of a Colored Map (among some others) in the interactive Chart Wizard

2017 UPDATE: This answer is quite old and as such the Map Charts API has been deprecated by Google. You can use the Geocharts from the Google Charts API instead:

https://developers.google.com/chart/interactive/docs/gallery/geochart

Hope this helps!