Bug report
When saving a figure, either via plt.savefig() or by clicking the disk icon on the figure display UI, the saved figure has no facecolor.
Code for reproduction
dino@DINO:~/code/mplfinance$ ipython
Python 3.7.4 (default, Aug 13 2019, 20:35:49)
Type 'copyright', 'credits' or 'license' for more information
IPython 7.8.0 -- An enhanced Interactive Python. Type '?' for help.
In [1]: import matplotlib as mpl
In [2]: mpl.__version__
Out[2]: '3.1.3'
In [3]: import matplotlib.pyplot as plt
In [4]: y = [2,4,3,7,1]
In [5]: x = [0,1,2,3,4]
In [6]: plt.rcParams['figure.facecolor'] = 'c'
In [7]: plt.plot(x,y)
Out[7]: [<matplotlib.lines.Line2D at 0x7ff9eeb49090>]
In [8]: plt.show()
In [9]: plt.rcParams['figure.facecolor'] = 'c'
In [10]: plt.plot(x,y)
Out[10]: [<matplotlib.lines.Line2D at 0x7ff9d7890d10>]
In [11]: plt.savefig('testsave.png')
Here is what the plot looks like upon plt.show()

Here is what the plot looks like when I click the disk icon on the above UI to save the plot:

Here is what the plot looks like when I call plt.savefig('testsave.png')

Bug report
When saving a figure, either via
plt.savefig()or by clicking the disk icon on the figure display UI, the saved figure has no facecolor.Code for reproduction
Here is what the plot looks like upon
plt.show()Here is what the plot looks like when I click the disk icon on the above UI to save the plot:
Here is what the plot looks like when I call
plt.savefig('testsave.png')