Only available if you had Windows XP Media Center Edition 2005 installed.
After Windows XP’s launch, Microsoft realized that the default blue Luna was starting to look dated. To compete with Apple’s Aqua interface, they released new themes via specialized product lines. all windows xp themes
The emergency button for purists. If you hated the rounded corners and wanted the gray, boxy feel of Windows 2000 or NT 4.0, Classic was your theme. It consumed less RAM and GPU resources, making it the go-to for gamers trying to squeeze out extra frames. Only available if you had Windows XP Media
These themes came pre-installed with Windows XP Home and Professional editions. They are based on the "Luna" visual style. Luna Olive Green
Released with Windows XP Home and Professional (2001).
Luna features a blue taskbar, green Start button, and rounded window corners.