Luna

Luna is the visual style that shipped with Windows XP (with the exception of the Starter SKU and IA-64 releases) and some builds of Whistler (starting with build 2415 and then from build 2428 onwards).

It was also available in Windows Server 2003 (starting with at least build 2430, though disabled by default), and all Longhorn builds up to build 5048 (although the new taskbar and sidebar when enabled would still display in the Longhorn Plex/Slate style). The last known build to include the Luna visual style was Windows Vista build 5059; however, the authenticity of this build is not confirmed.

Luna in Windows XP (build 2481 onwards) had three color schemes: Luna Blue (the default), Luna Silver, and Luna Olive Green. References and color values for a scrapped "Champagne" color scheme are present in the source code for both Windows XP Service Pack 1 and the RTM build of Windows Server 2003:

The Royale, Royale Noir, Zune, and Embedded themes found in other operating systems are based on the existing Luna visual style.