title: matplotlib advanced bar plot
body: <p>I need to recreate a chart similar to the one below created in Excel.  I was hoping to use matplotlib, but can't seem to find any examples or reference for how to do a chart like this.  I need to have bars colored based on a performance threshold, and also display the threshold.  Can anyone point me in the right direction?  I do need to be able to do this with Python, though.<img src="https://i.stack.imgur.com/qqfgC.png" alt="plot example"></p>