item

A chart point that presents an item.

Value type: Object

borderColor - (string) the outer color of an item marker
borderWidth - (number) the width of the border line (by default, 2)
color - (string) the inner color of an item marker
radius - (number) the item radius (by default, 4)
type - ('round' or 'r', 'square' or 's', 'diamond' or 'd') the shape of items markers (by default, 'round')

var chart =  new dhtmlXChart({
    ...
        item:{
               borderColor:"#ffffff",
               color:"#000000"
        },
        ...
})

chart.define("item",{
            borderColor:"#ffffff",
                        color:"#000000"
        },
);