Change the plot color in Matplotlib
The plot() in Matplotlib pyplot takes the color option.
import numpy
from matplotlib import pyplot
x = numpy.arange(-7, 13, 0.1)
y = numpy.array([a * a for a in x])
pyplot.plot(x, y, color='#fc3503')
pyplot.savefig('color.jpg')
The color of curve is #fc3503. The default color is dark blue.