# Box plots with custom fill colors

import matplotlib.pyplot as plt

import numpy as np

# Random test data

np.random.seed(123)

all_data = [np.random.normal(0, std, 100) for std in range(1, 4)]

fig, axes = plt.subplots(nrows=1, ncols=2, figsize=(12, 5))

# rectangular box plot

bplot1 = axes[0].boxplot(all_data,

vert=True, # vertical box aligmnent

patch_artist=True) # fill with color

# notch shape box plot

bplot2 = axes[1].boxplot(all_data,

notch=True, # notch shape

vert=True, # vertical box aligmnent

patch_artist=True) # fill with color

# fill with colors

colors = ['pink', 'lightblue', 'lightgreen']

for bplot in (bplot1, bplot2):

for patch, color in zip(bplot['boxes'], colors):

patch.set_facecolor(color)

# adding horizontal grid lines

for ax in axes:

ax.yaxis.grid(True)

ax.set_xticks([y+1 for y in range(len(all_data))], )

ax.set_xlabel('xlabel')

ax.set_ylabel('ylabel')

# add x-tick labels

plt.setp(axes, xticks=[y+1 for y in range(len(all_data))],

xticklabels=['x1', 'x2', 'x3', 'x4'])

plt.show()