Follow along with the video below to see how to install our site as a web app on your home screen.
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If the Windows XP Style choice isn't available, the Visual styles are implemented by the Themes service. If the service isn't running, Windows reverts to the classic Windows style, which doesn't rely on the Themes service.
To restore the Windows XP styles.
Start, Run, services.msc
Scroll down to and double click Themes
Set to Automatic under Startup type.
Click the Start button.
If that doesn't fix the problem, right-click My Computer, Properties, Advanced, Performance -- Settings.
Under the Visual Effects tab: "Use Visual Styles On Windows And Buttons" then click Apply, OK.
MS-MVP Wes Vogel and MS-MVP Kelly Theriot have some notes that might help.
Restore Luna Theme -- Line 187. Right hand side