enhancement - allow the specification of colors per vertex, assign them to the faces. This is used for the ply 3-D scans with EMG data from Hans. See also http://bugzilla.fcdonders.nl/show_bug.cgi?id=2370


git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@8748 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0