Here is what the lazy imager used for the luminance component of the M16 shot
50K version:
http://www.pbase.com/strongmanmike2002/image/60867787/large
500K version:
http://www.pbase.com/strongmanmike2002/image/60867787/original
I'm partial to B&W - a throw back to the good'ol film days nodoubt...? :-)
Mike