No macOS transformation is complete without the dock. Since Windows 7 uses a taskbar at the bottom, most users choose to move the Windows taskbar to the top (set to "Auto-hide") and place a dock at the bottom.
Once your system is patched, you need a Visual Style (the actual theme file). DeviantArt remains the best repository for these. Popular options include: macos theme for windows 7
Provides a flatter, more modern window design. No macOS transformation is complete without the dock
The most famous choice for Windows 7. It is lightweight and highly customizable with "Stacks" docklets. macos theme for windows 7