When having 2 data on Axis how do you use multiple colors?

[anoble1]

I have a question. I have a bar graph of Years and Months. How do i get the graph to show the months Grouped by the same color? Example: I want January 2015, 2016, 2017, 2018 to get all the same color, but every month to have it's own color. Ideas?

Right now Month and Year are in the AXIS and I have a number field in the Values.