[ENH]: consistent behaviour for stem #23127
Description
Problem
stem and plot should be interchangeable.
from matplotlib.pylab import *
style.use(['bmh', 'dark_background'])
a = randn(5)
b = randn(5)Plotting two lines
plot(a)
plot(b)
Choosing the colours
plot(a, 'r')
plot(b, 'b')
Now with stem
stem(a)
stem(b)
Same colour? Why? Which one is which???
Okay, let me choose the colours
stem(a, 'r')
stem(b, 'b')ERROR!
Proposed solution
Share the same basic syntax across functions visualising the same type of data?