We can have further refined control over marker styles with some more keyword arguments. For example, for plt.plot(), we can change the markeredgecolor, markeredgewidth, and markerfacecolor.

Here is a code example:

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.colors

# Prepare data points
x = list(range(5))
y = [1]*5

# Set the face color, edge color, and edge width of markers
plt.plot(x,y,marker='o',ms=36,markerfacecolor='floralwhite',markeredgecolor='slateblue',markeredgewidth=10)

plt.show()

This is the result of adding the extra keyword arguments: