Returns an array of <code>RGB</code>s which comprise the indexed color table of the receiver, or null if the receiver has a direct color model.
@return the RGB values for the image or null if direct color
@see PaletteData#getRGBs()
See Implementation
Returns an array of <code>RGB</code>s which comprise the indexed color table of the receiver, or null if the receiver has a direct color model.
@return the RGB values for the image or null if direct color
@see PaletteData#getRGBs()