Hi,
You can use a built-in helper:
http://jsfiddle.net/dfykrmp2/
function linkStyle(link) {
link.fromDecoration = "circle";
link.toDecoration = "arrow";
var c = ZoomCharts.Internal.Base.Colors.parse("#f00"); // take color from data e.g. link.extra.something
var s = "rgba(" + c.R + "," + c.G + "," + c.B + ",0.5)";
link.fillColor = s;
}
@Aivis, please note the feature request.
Thanks,
Janis