Style abstraction techniques are described for use in customizing elements included in a user interface. In an implementation, a structural attribute is obtained that defines a structural component of an element that is to be included in a user interface. A style attribute is also obtained that is operable to define a visual aspect of the structural component. The user interface is generated by combining the style attribute and the structural attribute at run-time to form the element. The element, that includes the visual aspect applied to the structural component, is presented on a display device of a mobile device.