Then navigate to:
# Extract the downloaded theme unzip Win10ThemeForWine.zip -d ~/win10_theme cp -r ~/win10_theme/Win10 ~/.wine/drive_c/windows/Resources/Themes/ Copy the .msstyles file (if present) to the same folder cp ~/win10_theme/win10.msstyles ~/.wine/drive_c/windows/Resources/Themes/Win10/ Download Windows 10 Theme For Wine
wine regedit Navigate to: