BUG: RGBA-transparency issue in pandas boxplot

[MatthiVH]

When setting color and transparency using rgba-values in pandas.boxplot(), the code doesn't seem to recognize the alpha-value. I raised a question on StackOverflow already (https://stackoverflow.com/questions/61501795/set-boxplot-boxes-facecolor-transparency-in-python-matplotlib) but this might be something to fix in the github. I have used rgba-values elsewhere and never had issues with it, only here it doesn't seem to work properly.

[StefRe]

See my SO answer. I think you can close this issue.