'Set the vertex color array (Nv, 4).
If indexed==\'faces\', then the array will be interpreted
as indexed and should have shape (Nf, 3, 4)'

def setVertexColors(self, colors, indexed=None):

    if (indexed is None):
        self._vertexColors = colors
        self._vertexColorsIndexedByFaces = None
    elif (indexed == 'faces'):
        self._vertexColors = None
        self._vertexColorsIndexedByFaces = colors
    else:
        raise Exception("Invalid    indexing    mode.    Accepts:    None,    'faces'")
