if (! horse->dead)
 flog(it)
else
 flog(it)

So tweaking RGB values in pigments brings them back into line, if they are
fully lit.  But adding {assumed_gamma 1} makes the edges of soft shadows
and spotlights sharper and faces oblique to incident light brighter.  This
is why I have had to tweak surface highlights and spotlight radii to
compensate for adding gamma to old scenes.

Demonstrated in p.b.i at
http://news.povray.org/povray.binaries.images/thread/%3Cweb.43a0a486c3c8eadaed802ab30%40news.povray.org%3E/

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