Since the release of Highcharts 3.0 we have the threshold option and negativecolor. It would be nice to be able to have a positivecolor also and color anything above the threshold instead of only values below the threshold.
For example right now i have a different color for each serie. And i want to use the threshold to change the color if above a certain threshold. Right now this means the color for each serie becomes the same for anything below the threshold.
Closing due to lack of activity. Also, we have now support for color zones.