Agave is an Intuitive Color Selection Manager

Agave is a color palette selection tool used to pick design layouts for desktop themes, web site designs, icon creation, and much more. It simplifies the process of choosing colors by generating a palette based on an initial color selection according to the selected rule and color set. Supported color sets include GNOME Icon, Tango Icon, Web-Safe, and Visibone.Read more at The Daily Ubuntu.