import openturns as ot
import openturns.viewer as otv

generator = ot.Normal(2)
size = 5
array = []
palette = ot.Drawable.BuildDefaultPalette(size)
for i in range(size):
    vertices = generator.getSample(3)
    array.append(ot.Polygon(vertices, palette[i], palette[size - i - 1]))

graph = ot.Graph("PolygonArray example", "x1", "x2", True)
graph.add(ot.PolygonArray(array))

otv.View(graph, figure_kw={"figsize": (4, 4)})