Greenhopper cumulative flow gadget legend covers important area of the chart

The legend for the cumulative flow chart gadget is fixed in the top right of the gadget. This is really one of the most important parts of the chart. Even though the legend is transparent, it is still difficult to see the separation of the areas in the top right. It seems like it would be better to have the legend in the top left where there will almost always be empty space given the nature of a cumulative flow chart. See screenshot for example.