You are tired of their graphics Windows; There are many transformation packages out there that can completely change the look of your operating system.
One of these packages is called OS X Mavericks Transformation Pack and as its name suggests, it will turn your Windows-running computer into a device that runs OS X. At least at least.
Version 3.1, just recently released, specifies a number of errorthose found in the previous version, so it runs better on Windows XP x64 as well as Windows 7.
Make sure before installing the app, you have created a backup of your existing one installation of your Windows. That way, in case something goes wrong or you're not satisfied with the result, you can go back to the default Windows settings.
You can download it OS X "Mavericks" Transformation Pack 3.1 for Windows from here.