Windows — 8.1 Icon Pack

7CONIFIER is a free, portable tool specifically designed for Windows 7/8/8.1. It allows you to patch the imageres.dll and shell32.dll files in one click.

If you're looking to apply a new look right now, you can manually change system icons or use specialized installers: windows 8.1 icon pack

Because 7TSP patches system DLLs,