Aero Lite

Aero Lite (officially referred to as Windows Basic) is a highly customizable visual style that is included in Windows 8 and later operating systems. It is used by the High Contrast themes (which make use of the various customizable elements), and acted as a replacement for the legacy Windows Classic visual style. It is the default visual style in Windows Server 2012 and 2012 R2, and was replaced by the Aero visual style in Windows Server 2016.

The theme file is present by default in Windows 8 client builds up to 8423, and was later made exclusive to server builds in build 8432 (fbl_loc), the theme file is no longer present by default, although the final release of Windows Server 2012/Server 2012 R2 and Server 2016 builds up to 10575 still use this visual style by default. In both cases, the display name is "Windows Basic" while it uses Desktop Window Manager, unlike the actual Windows Basic introduced in Windows Vista.

The msstyles file but not the theme file is present in the  folder from Windows 8 onwards. To enable the theme, create a copy of the  file called   and redirect it to the   file and set its display name to Aero Lite. Alternatively, you can copy the  file from Windows Server 2012/2012 R2 installation to   folder.