Bug summary

I'm getting an error when specifyingfacecolor orfacecolors for stackplot. Passingcolor oredgecolor does work however.

Code for reproduction

frommatplotlibimportpyplotaspltx= [0,1,2]y= [10,20,30]# Gives error "got multiple values for keyword argument 'facecolor'"plt.stackplot(x,y,facecolor='red')# Gives error "Got both 'facecolor' and 'facecolors'"plt.stackplot(x,y,facecolors='red')

Actual outcome

When specifyingfacecolor for stackplot, I get the error: "TypeError: matplotlib.axes._axes.Axes.fill_between() got multiple values for keyword argument 'facecolor'".

When specyfingfacecolors for stackplot, I get the error: "TypeError: Got both 'facecolor' and 'facecolors', which are aliases of one another".

Expected outcome

It should pass thefacecolor(s) tofill_between. How it does that exactly is open for interpretation: I would prefer if it would pass a list of colors as individual colors to subsequentfill_between calls (similar to how stackplot already interprets thecolor argument)

Additional information

No response

Operating system

macOS 15.7.2

Matplotlib Version

3.9.4

Matplotlib Backend

macosx

Python version

3.9.6

Jupyter version

No response

Installation

pip