Does anyone know if its possible to take a bubble chart like http://www.fusioncharts.com/charts/bubble_2/ and color each quadrant in the background in a distinct color? It'd be like a mix between a heat map and a bubble chart. I see some examples where the background color can be manipulated but it seems to be only possible on one plane (i.e. vertical or horizontal). In my case I'd like to make a specific defined area a certain color (such as the lower left quadrant green, upper right red, and upper left & lower right yellow).
Thanks in advance if anyone has any suggestions!
