Go to: http://www.geocities.com/SiliconValley/Lakes/1434/otherincludes.html
if you download the Tri-Colour Include file it may help.  Here's the
description:

This include file will allow you to colour triangles and smooth triangles by
specifying the RGB colour value at each corner of the triangle, creating a
smooth blend between the three colours (for scientific visualisation, etc).

Is that what you're looking for?

--
Lance Birch
Remove the smiley to e-mail.
http://www1.tpgi.com.au/users/ambient/lance

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