I am looking to have a chart with primary information in a bar-graph, and secondary information in a line graph. How would I set the colour of the data points on the line graph based on formulas? What I would like to say is this, if the value is between 0 and 3, format data point to red, if value is between 3 and 6 format data point to yellow, if value is between 6 and 9 format data point to green.