A method and system for determining a first local time of day for a user device, and determining a first value of a visual aspect of a drop shadow associated with an application window on the display based on of the first local time of day. The drop shadow is displayed in view of the first value, wherein the drop shadow provides a visual appearance that the application window is above a background. A second local time is determined, and a second value of the visual aspect of the drop shadow is determined, wherein the second value is in view of the second local time. The drop shadow is displayed in view of the second value of the aspect such that the drop shadow has a different visual appearance from the first local time to the second local time.