1)   Controls4J Library 1.0
Controls4J Library will help you to create truly attractive Graphical User Interface. It also allows you to reduce development time and concentrate on more significant objectives, rather than on construction of new controls.

 2)   AdvancedColorChooser 1.0b
More professional looking than the JColorChooser component, the AdvancedColorChooser can be used as a drop-in replacement. Supports custom Swatches, custom colors (stored in any way you choose), Web-safe colors and a recent colors list.