import numpy as np

import pandas as pd
import matplotlib.pyplot as plt
ser=pd.Series(np.sin(np.linspace(0,7,1000)),index=list(np.linspace(0,7,1000)))

asd,as_2=plt.subplots(figsize=(6,6))

ser.plot(ax=as_2,grid=True,style='.',colormap='Blues_r')


plt.show()