line

defines chart lines

object line;

webix.ui({
    view:"chart",
    type:"spline",
    ...
    line:{
        color:"#ff9900",
        width:3
    } 
})

Details

The property is applicable only to line, radar and scatter charts

The available attributes of the property are:

width	(number) the line width (by default, 2)
color	(string,function) the line color (by default, "#1293f8"). As a function,it accepts a data object and is called for each data item