Top and bottom line on errorbar with python and seaborn

I am trying to plot errorbars with python and seaborn but I am not entirely satisfied with how they look.

The default seaborn error bars look like this :

But I am looking to add the bottom and top lines on the error bars like this (in order to differentiated between the two error bars, it's the default matplotlib style) :

How can I do this in seaborn ?

Here is the code:

import matplotlib.pyplot as plt
import seaborn as sns

fig1 = plt.figure(figsize=(20, 12))


x_values = [1,2,3,4]
y_values = [1,2,3,4]

y_error = [1,0.5,0.75,0.25]

plt.errorbar(x_values, y_values,  yerr=y_error ,fmt='o', markersize=8)

plt.show()