WindowBlinds back in the XP, Vista, and Win 7 days wasn't to bad of a program if you were looking to change your desktop. In fact for a while it was about the best out there, albeit in todays world there are a great many UI changing styles that are free. Because of the large amount of free UI styles programs like WindowBlinds, WindowBlinds has slowly dropped off (why pay when the same, and in some cases there better UI styles available free).
If you are looking to change the Desktop UI just go to "Google" and type in: "Windows 8 Desktop UI styles," you will be directed to a great many styles to choose from (again free).
At present I have four to choose from in my "Personalize" section (XP, Vista, Win 7, and OS X 10.8.3 Mountain Lion). At this time I am using the OS X Mountain Lion.
Again WindowBlinds is a good program just remember there are more out there. . .