The DataTables plugin is the first plugin we've used that has support for the jQuery UI Themeroller. jQuery UI is a collection of widgets and interactions that make building complex applications easier and faster. Learning jQuery UI itself is beyond the scope of this book, but we'll take a look at how to use the jQuery UI Themeroller to create a custom theme for our data table. This same theme would apply to any jQuery UI widgets used on our page, as well as any jQuery plugins being used that include support for the jQuery UI Themeroller.