Are you bored by seeing the old themes and wallpaper? I have one incredible hidden trick to find out different themes installed on your computer lets test this new flavor,
In search box of start menu or Run windows (Win+R) type “
%windir%\Globalization\MCT” and press enter.
Windows explorer shows the folder, all folders contains on theme, click anyone directory, click themes directory, click/double click on “.theme” file.