by Junior-B December 2nd 2008, 7:59 pm
Well...*googles*
Theme: In the visual arts, a theme is a broad idea or a message conveyed by work done in a visual experience, such as a performance, a painting, or a motion picture. This message is usually about life, society or human nature. Themes are the fundamental and often universal ideas explored in a work.In computing, a theme is a preset package containing graphical appearance details, used to customise the look and feel of (typically) an operating system, widget set or window manager.
In other words, all the colours, buttons, pictures and graphics of your forum packed, this is a theme.