Hi Rick,
Thank you very much for an excellent post. I found it is helpful for me.

I have created a similar your plot. One issue I would like to learn is how to fill different colors in different bars.

Indeed, I use a function 'Colorresponse" in SAS to fill. It works, but I cannot be able to change a color.

Therefore, I do appreciate if could you please give me some advice.

Thank you very much