Aqua

Aqua is the name given for the interface design model developed by the Apple Computer corporation and released with their Mac OS X. It is characterized by gel-like, glassy buttons and animated pulsing glows.

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Aqua is also a color, a shade between green and blue. On a browser that supports visual formatting in Cascading Style Sheets, the following box should appear in this color:

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Aqua is also the name of a very popular 1990s European music band, perhaps most famously known for its popular song, "Barbie Girl", which ultimately lead to a lawsuit filed by Barbie maker Mattel.