I was going to make a tutorial for this eventually. I just never got to it.
You can use UXTheme Neowin patcher.
Just search for it on Google and make sure it`s safe to download! It patches a file in your system folder that allows you to change to any visual style you please.
There are hundreds and thousands of premade skins on deviantart.com. Here is the Deviant Art link: deviantART: where ART meets application!
Just download one. Then extract it to my computer> c> windows > resources > themes.
After that, go to the folder with the theme, double click on the "windows theme file" and you should be able to change it 8D.