Sample Test Visual Style

Sample Test Visual Style (internally known as Mallard) refers to the experimental visual styles in Windows Whistler, named Chartreuse Mongoose and Blue Lagoon. They are essentially the same theme, but with different colorations. They were included from build 2410 to 2419. As these themes are experimental, they tend to affect certain applications such as Solitaire and might affect their performance or break their functionality. The theme has served as a decoy to distract the general public while the visual styles team worked secretly on Luna.