How to bind to link color?

I tried to make a binding on the link “stroke” property, but I keep getting:
Binding error: undefined target property: stroke on Link#6989

How can I bind to the link, color, this is my template:

 $(go.Link, {

                selectable: true,
                relinkableFrom: true,
                relinkableTo: true
            new go.Binding('stroke', '', value => {

                return value ? 'red' : 'black'
            $(go.Shape, {strokeWidth: 3}),
            $(go.Shape, {toArrow: 'standard'}));