t = np.arange(0.0, 2.0, 0.01)
s = np.sin(2 * np.pi * t)
plt.plot(t, s, c=seaborn.color_palette()[2])
plt.plot(t, 2 * s, c=seaborn.color_palette()[2])
Matplotlib + Seaborn - two lines with the same color?