1. A theme management system configured for rendering graphical components on a computer system having a graphical operating system running one or more applications, each application being able to make a request to be linked to a controls module, the theme management system comprising: a first controls module having one or more first functions responsive to application program interface calls capable of rendering graphical components with themes; a second controls module having one or more second functions responsive to application program interface calls capable of rendering graphical components without themes; and a fusion module that responds to the request by determining whether to link the application to one of the first controls module or the second controls module to render graphical components.