Watercolor

Watercolor (also known as Business or Professional) is the name of a placeholder visual style created by Microsoft during development of the Windows XP operating system.

Contrary to popular belief, the first known build to include it was build 2223; however, there was no user interface to enable it and it was largely incomplete. By build 2250, the Desktop control panel was enhanced to support the new visual styles and as a result, many mistakenly consider it to be the first build to include the visual style. The last known build to include the Watercolor theme was build 2419. The theme would later serve as a base for all future visual styles created for the Windows operating system.

Early variants of Watercolor featured a dark blue and gray theme that was reminiscent of the Windows 2000 color scheme. This was later changed around build 2257 to use brighter shades of blue with red frames for disabled windows.

Although the theme was removed from Windows XP after the introduction of Luna, it was still included in the source code of both Windows XP and Windows Server 2003. In addition, references and color values for a scrapped "Champagne" color scheme are present in the visual style's source files: