Add two seperate column series to the chart, one that encodes the positive values, one that encodes the negative values. As long as they are on two seperate x axes but share one y axis, they should line up as in your picture.

If the split between blue and red isn't 0, then split it up into 2 series based on the actual split value you want to use, and then set the ReferenceValue of the shared y axis to whatever value is the split point.