The "Royale" theme for Windows is based on the theme by Microsoft for the Windows Media Center Edition of Windows. Due to the overwhelming popularity of that skin for Windows, Microsoft has released this official edition of the Royale theme for Windows XP users and is available from the Microsoft web site.
It is a sleek-looking skin and very attractive. Time to spice up your Windows installation and forget about installing Windows 7
From Microsoft:This is the XAML that defines the Royale theme for Microsoft .NET Framework controls on Windows Vista. The Royale theme is the default style for Window Media Center Edition.Royale for Windows XP 1.0
is licensed as Freeware
for the Windows operating system / platform without restrictions. Royale for Windows XP is available to all software users as a free download (Freeware).
Royale for Windows XP Virus and Malware Tests:
For security reasons, you should also check out the Royale for Windows XP virus and malware test
that has been uploaded; additional Royale for Windows XP screenshots may be available, too.