for surf_no = 1 to countsurfaces(mesh)
for vert_no = 0 to countvertices(surf_no)-1
{do something to vert}
vertexcolor surf_no,vert_no,blah,blah,blah
next
next
... or did you mean something else??
for vert_no = 0 to countvertices(surf_no)-1
{do something to vert}
vertexcolor surf_no,vert_no,blah,blah,blah
next
next
... or did you mean something else??