Stacked chart with different bar colors

 Hello,

I am implementing a stacked chart requirement and it is kind of unconventional, so I am reaching out to BI experts to see if I can get some help/pointers on the same.

We are required to design a vertical stacked bar chart which has different colors on different bar graphs. Conventionally  we repeat the same series of colors in our charts, but the requirement here is to use different series of colors for different bars. I am really not sure on how to implement that. 

I am attaching a mock-up of the requirement so that you all can understand better on the same.