Xplo Eristotle wrote:
> 
> Seems to me that the higher an object's reflection is, the less its
> pigment should have any effect on its appearance (provided that you're
> using non-metallic reflection), until you reach reflection 1, at which
> point the pigment would cease to be relevant.

What's wrong with using:

#declare _refl = 0.3;	// change this
#declare _diff = (1-_refl);
:
:
finish
{
   diffuse _diff;
   reflection _refl;
}?

This is, what I use if I want to have "physically" correct
surfaces.

Markus

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