Conditional color for Stacked Column chart

Hi,

I would like to change the color of stacked column chart based on 2 data I have in the query (Actual or Forecast) that depends of the Period.

See the picture to understand what I mean : 

I have from actual month (May19) and beyond the word "Forecast" in my column of the query called "Actual or Forecast" and I would like to reflect this in the columns for the Visual:

Is possible to do this ?

Thanks & regards