The Rainmeter application allows you to change your visuals of your computer. You can use the Iron Man theme on your desktop, or you can create a custom made theme for your computer. The Rainmeter application is a open source application and you can download it for free from the official website.
The application will allow you to change various visual settings of your Windows desktop environment. There is a very active forum, which creates various free templates for the Rainmeter application.
Rainmeter displays customizable skins, like memory and battery power, RSS feeds and weather forecasts, right on your desktop. Many skins are even functional: they can record your notes and to-do lists, launch your favorite applications, and control your media player – all in a clean, unobtrusive interface that you can rearrange and customize to your liking.
Download from the official website – http://rainmeter.net/
Select the installation type
Select the location for the application
Start the application
First screen after installing Rainmeter
Download the Iron Man theme from the official forum: