I am trying to create a graph, where each month the numbers will be updated.
I want the positive numbers to show up green in the graph, and the negative
numbers to show up red on the graph. I know that I can adjust this manually,
but this will be linked to 200 or so department reports. I don't want to do
it manually. When I click "invert negative" on the graph dialog box, it
turns the negative numbers blue.