D3 Pie Chart arch mouse hover effect

How to do the pie chart arch color change on mouse hover ?
Using .outerRadius(103 + 5); for hover transform, but how to apply some color change for arch? Please help

var arcOver = d3.arc()
        .innerRadius(0)
        .outerRadius(103 + 5);

https://jsfiddle.net/anoopsuda/1jnLda78/1/