ll until the ColorModel used by the
 ImageProducer is known.
 Since the PixelGrabber may fall back on accumulating the data
 in the default RGB ColorModel at any time if the source image
 uses more than one ColorModel to deliver the data, the ColorModel
 object returned by this method may change over time until the
 image grab is complete.<DD><DL>
<DT><B>Returns:</B><DD>the ColorModel object used for storing the pixels<DT><B>See Also: </B><DD><A HREF="../../../../../com/sun/jimi/core/util/PixelGrabber.html