If your goal is to make Windows 7 look like Vista, you can use a "Transformation Pack" or manual theme files. Using Theme Files (.zip)

Official Microsoft support for these versions has ended, so users often turn to archives like the Internet Archive for ISO images. Extracting the Zip: Right-click the downloaded folder. Select Extract All... to use the built-in Windows utility.

If the file is a .7z format, you will need to install 7-Zip first. 🎨 Transforming Windows 7 to Vista