def METHOD_NAME(self, b_mesh, layer):
    # TODO [geometry] Length is 2 during one of the checks
    # nose.tools.assert_equal(len(b_mesh.vertex_colors), 1)
    nose.tools.assert_equal(b_mesh.vertex_colors[0].name, layer)
    layer_colors = b_mesh.vertex_colors[layer].data
    print("Vertex color list")
    for item in layer_colors:
        print(item.color)
    for face_index, face in enumerate(self.b_faces):  # nif_faces: 0-11
        for vert_index, n_vert in enumerate(face):
            b_color = layer_colors[face_index + vert_index].color  # the collection is linear
            self.b_check_vert_colors(b_color, self.vertcol[vert_index])