How to output plots in a dark theme?

[Arthur Pendragon]

Hey guys, I'm new to backtrader, anyone knows how to plot output with a dark background? I need it because I'm building a Telegram Bot and I wish the output would be black on background.

Thanks in advance.

Arthur

[rho33]

This gave me decent dark background plot without adding too much code.

import matplotlib.pyplot as plt

# run backtest...

plt.style.use('dark_background') # call before plotting

cerebro.plot(
    loc='grey', # changes color for 'line on close' plot otherwise it will plot black on black
    grid=False # the default gridlines didn't look good w/ dark background
)

fig = plt.gcf()
# this will make the value tags at end of the lines readable. Otherwise it will plot white on white
for ax in fig.axes:
    for text in ax.texts:
        text.set_color('black')

plt.show()

Backtrader plots using matplotlib so if you're familiar with it you can always plot with cerebro.plot(), get the current figure with fig = plt.gcf(), and alter the figure's elements from there.