Found a more recent post showing correct code to place in beforeInit() so colors are now set. This should be corrected so that colors can be properly set in the series properties.
Next issue now is trying to hide the circle markers in stacked bars. In this case I've got three series which are stacked and no need to see the circular marker. Again should be an exposed property.
Last issue is the Y-axis labels. All values being graphed are integers yet the labels are formatted with a single decimal (1.0, 2.0, etc.). How can a format mask be applied so these values show only as integers?