SMART datagrid v.1 > Classes > SparkLineRenderer
The color of line.
If specify this value as undefined or null, it will draw by using line property value which has been specified in Column Style. v 1.3.6
Please refer to Colors topic about the way of setting the color.
Defaults to "#808080".
column.setRenderer({
type: "sparkLine",
lineColor: "#f00",
highColor: "#ff008800",
lowColor: "#ffff0000"
});