Change color of line graph in Highchart.js

I have to create line graph like the below image. When Actual value exceeding Plan value line color should be green otherwise line color should be red in same line graph using below value lstMonth
:
Array(48)
0
:
Actual
:
“74”
Chart_Code
:
“SACLS&MOver AllR0”
From
:
null
GraphModel
:
null
GraphTitle
:
“Overall Achievement ”
GraphType
:
“”
Graph_Better
:
“1”
Graph_Better2
:
“0”
Id
:
null
Last_Year_Actual
:
“99”
Month
:
“Apr”
PageNo
:
“3”
Plan
:
“100”
Plan_revised
:
“”
Policy_Ref_No
:
“OverAll”
Responsible
:
“SL”
Revision_No
:
“0”
ScissorType
:
“0”
To
:
null
UOM
:
“%”
Variance
:
“”
pagetitle
:
null
[[Prototype]]
:
Object
1
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘May’, Plan: ‘100’, …}
2
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Jun’, Plan: ‘100’, …}
3
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Jul’, Plan: ‘100’, …}
4
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Aug’, Plan: ‘100’, …}
5
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Sep’, Plan: ‘100’, …}
6
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Oct’, Plan: ‘100’, …}
7
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Nov’, Plan: ‘100’, …}
8
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Dec’, Plan: ‘100’, …}
9
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Jan’, Plan: ‘100’, …}
10
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Feb’, Plan: ‘100’, …}
11
:
{Id: null, Policy_Ref_No: ‘OverAll’, Chart_Code: ‘SACLS&MOver AllR0’, Month: ‘Mar’, Plan: ‘100’, …}