Importing pybamm affects style of Matplotlib figures

Describe the bug I prefer to create my own Matplotlib figures without using the sim.plot() function in PyBaMM. Unfortunately, importing pybamm will affect the style of the Matplotlib figures even if I don’t use PyBaMM to create the plots.

To Reproduce In this example, pybamm is imported. Notice the small font size used for axis labels and the red color applied to the line plot.

import matplotlib.pyplot as plt
import pybamm

_, ax = plt.subplots()
ax.plot([1, 3, 5, 3, 8.4])
ax.set_xlabel('X axis')
ax.set_ylabel('Y axis')

plt.show()

In this example, pybamm is not imported. Notice the default (larger) font size for axis labels and the blue color for the line plot.

import matplotlib.pyplot as plt

_, ax = plt.subplots()
ax.plot([1, 3, 5, 3, 8.4])
ax.set_xlabel('X axis')
ax.set_ylabel('Y axis')

plt.show()

Expected behaviour I expect the default figure style to be used when creating plots with Matplotlib.

[tinosulzer]

Thanks! Branch from and PR to develop. Typically we would do a branch like issue-1618-plot-style

[wigging]

Yes, I can work on this. I looked at the contributing guidelines. After I fork the repository, which branch should I work from? Do I create a branch from main or from develop? And from my branch, to which branch do I make the pull request to?