A few days ago, I changed the theme of Win 7 on my office computer to Win 8.1. Now, it looks much better. Through all these years, I still cannot accept the default theme of Win 7.



You can download the Win 8.1 theme for Win 7 here:
http://www.askvg.com/download-windows-8-rtm-theme-for-windows-7/

And if you want to change the start button, login screen and so forth as well, you can refer to this article:
http://www.askvg.com/transform-windows-7-into-windows-8-vnext-without-using-customization-pack/