Themes [upd]: Windows 7 Regional
Windows 7, released in 2009, emphasized personalization through its "Themes" feature in the Personalization Control Panel. Among the built-in options were (e.g., "South Africa," "Canada," "United Kingdom," "Germany"). These were not merely wallpapers; they included localized sound schemes, desktop backgrounds, screen savers, and window colors reflecting the geography, art, and culture of a specific region.
[Control Panel\Colors] Window=240 240 240 ...
If you can't find a regional theme that suits your needs, you can create your own custom theme. Here's how:
Windows 7 introduced a feature called "Regional Themes" or "Aero Themes" that allowed users to customize the look and feel of their Windows desktop. Here are some examples of regional themes that were included with Windows 7:
To install your own Windows 7 regional theme today: