public interface ColorSource<K extends java.lang.Comparable<K>>
A color source for use by the PiePlot3D class. This is the
interface through which the plot will obtain colors for each data item
(segment) in the chart. A default implementation
(StandardColorSource) is provided.
Restyles the source using the specified colors. Refer to the
implementing class to confirm the precise behaviour (typically all
existing color settings are cleared and the specified colors are
installed as the new defaults).