Column chart custom column color by function

Hi i want to have a column chart where i am showing two values, a "base" and a "reference" value. The "reference" column should have a static color, but the "base" column should get a dynamic color. 

If i have only one value in the chart then i can select the dynamic solution for the color from the Columns--> Colors section.

But if i place more than one values in the graph i get some static selection of the color per value.

Is there any possibility to be able to select per value different logic?