Sample Test Visual Style
|Component of Windows|
|Introduced in||Windows XP build 2410|
|Last included in||build 2419|
Sample Test Visual Style (internally known as Mallard) is a visual style included in some pre-release builds of Windows XP. As of 2019, the only leaked builds to include the style are Windows XP build 2410, 2416, and 2419, where it includes two color schemes, called Chartreuse Mongoose and Blue Lagoon (internally referred to as Paler).
A Whistler feature planning spreadsheet from 2000-02-22 mentions a default skin set consisting of a Consumer and Pro look planned to be finished by 2000-04-28, which refers to Watercolor (then-named Business) and possibly this theme as the string Personal Visual Style has been found in the theme files in early pre-Beta 2 builds. The Taskbar and Start Menu Properties control panel in build 2257, which was compiled on 2000-08-10, includes a low resolution screenshot of the desktop with the new Start Menu open, which is used to illustrate the respective option. Interestingly enough, said screenshot also shows a taskbar whose design shares many similarities with the sample style later included in pre-Beta 2 builds, however, it doesn't include a watermark, therefore it is very likely to be a concept.
themes.ini file embedded in
test.mstheme from early pre-Beta 2 builds contains a last updated date of 2000-07-11. However, the same file in the Watercolor theme claims a last update date of 2000-04-19, which predates build 2250. Given that the Watercolor theme (then-named Professional) has undergone a major revamp between builds 2250 and 2257 and that the INI file itself has been updated several times in the lead up to build 2419 with the last update date staying unchanged, this value should not be considered accurate.