Using Matplotlib i often find myself repeadily writing the following to change the alpha value of the plots:

plot(x,y1, alpha=.6)
plot(x,y2, alpha=.6)
plot(x,y3, alpha=.6)
...

I was hoping to find a matching value in the rcParameters to change to option globally like:

plt.rcParams['lines.alpha'] = 0.6

Could this be implemented so it can be set in a style sheet and the code stays short and readable?