This is a follow-up to a question I asked several weeks ago. 
Apologies for the delay, I had medical issues.

The question was whether SVG supported name aliases for color
definition, and I was shown there is indeed an existing list of such
named colors.  I think what I'm driving at goes a bit deeper; an
example might be best.

In the GeoSym standard, when the various attributes of a feature are
looked up and evaluated to select a final portrayal image, the color
of that image is defined by a specific name; that name has to be used
as is, or else somehow translated from GeoSym into something that SVG
can understand.  Further, the same color name will refer to one of two
different RGB values, depending on whether the feature is being viewed
under day or night conditions.

My question, my understanding of the underpinnings of SVG being as
weak as it is, can this color definition method be supported within
SVG itself, or must the colors first be translated into RGB values
externally and fed to SVG?  The distinction is important because the
question is being asked by standards people, as in committee members
who are creating an ISO standard, and they want to know what a
currently-existing standard (SVG) can support if they refer to it as
an implementation option.

Hope I've managed to convey what I'm driving at.  Thanks in advance!



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