set line color from data

As mentioned in line section, there are two types of lines: in line and out
line. The colors
associated
with these two types of lines are called inColor and outColor. Each line can have a unique color
specified through the input data as follows:

[
        {
                "e":
"CN",
                "i":
"US",
                "v":
100000,
                "inColor":
"#0000FF",
                "outColor":
"#00FF00"
        },
        {
                "e":
"CN",
                "i":
"RU",
                "v":
3000000,
                "inColor":
"#EE0E00",
                "outColor":
"#FFFF00"
        }
]

Note: e, i, and v have the same definition as in addData.