"Edward C." wrote:
> 
> <snip>
> >What I find most surprising is that the color
> >red and green mix together to form black.
> <snip>
> 
> A pure red filter removes none of the red, all of the green and all of the
> blue.  A pure green filter removes all of the red, none of the green and all
> of the blue.  Together they remove all the red, all the green and all the
> blue.

	I guess that I need to think of the objects as actual physical filters and not the
addition of different wavelengths of light.  I would expect the addition of red green
and
blue to be white when in fact it acts like black.  The absence of any transmitted or
reflected light.  Perhaps if I used blob components that always had a value of 1.0 for
red
or green or blue.  I wonder ....

Dennis

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