[Tig] color space png on WikiPedia

[Bob Friesenhahn]

See http://www.brucelindbloom.com/index.html?WorkingSpaceInfo.html for 
information on RGB working spaces.

Notice that the author of this web site (Bruce Lindbloom) has come up 
with his own RGB working space based on what really matters for film. 
Read about it at 
http://www.brucelindbloom.com/index.html?BetaRGB.html.

Bob
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Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/