[Solved]-How do I customize link style for each data link in a Highcharts network graph?-Highcharts

Data links are defined as points in the networkgraph series, you can customize each of them in a few ways.

1. Add additional key to the keys array, like color and next add prefered color for particular data - demo: https://jsfiddle.net/BlackLabel/p9wy1u02/

2. You can update each point in the load callback - https://jsfiddle.net/BlackLabel/vj3Ldbu9/

API: https://api.highcharts.com/highcharts/chart.events.load

API: https://api.highcharts.com/class-reference/Highcharts.Point#update

API: https://api.highcharts.com/highcharts/series.networkgraph.data.color