Yes! Its possible to apply different colors to line chart markers based on its value.
Here is the script for this
widget.on('processresult', function(se, ev){
$.each(ev.result.series[0].data, function(index, value){
if(value.y <= 5000){
value.marker.lineColor = '#206902'
value.color = '#206902'
value.marker.states.hover.lineColor = '#206902'
value.marker.states.select.lineColor = '#206902'
}
else if(value.y <= 10000){
value.marker.lineColor = '#56c229'
value.color = '#56c229'
value.marker.states.hover.lineColor = '#56c229'
value.marker.states.select.lineColor = '#56c229'
}
else if(value.y <= 15000){
value.marker.lineColor = '#5cfa19'
value.color = '#5cfa19'
value.marker.states.hover.lineColor = '#5cfa19'
value.marker.states.select.lineColor = '#5cfa19'
}
else if(value.y <= 20000){
value.marker.lineColor = '#ff4f4f'
value.color = '#ff4f4f'
value.marker.states.hover.lineColor = '#ff4f4f'
value.marker.states.select.lineColor = '#ff4f4f'
}
else{
value.marker.lineColor = '#ed2b34'
value.color = '#ed2b34'
value.marker.states.hover.lineColor = '#ed2b34'
value.marker.states.select.lineColor = '#ed2b34'
}
})
})