1. A mobile handset capable of being configured with a theme, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured with software to: set a calendar event alarm associated with a calendar event in a calendar application, wherein the calendar event alarm includes a user indication that a theme change is required; receive the calendar event alarm from the calendar application; access a theme server via a wireless data link in response to receiving the calendar event alarm from the calendar application; transmit the calendar event to the theme server via the wireless data link; receive a theme data record from the theme server via the wireless data link, wherein the theme data record is selected by the theme server based at least in part on the calendar event; and change the theme implemented on the mobile handset using the received theme data record.