Assign specific color to specific segment in D3 Pie Chart

I have built a pie/doughnut chart using D3js (v4) as an Ember component and I am trying to have segments with specific labels be filled with a specific color but it is proving difficult.

To color the charts I have the following code:

marc = arc().outerRadius(radius - 10).innerRadius(radius - donutwidth),
color = scaleOrdinal().range(['#49b6d6', '#f59c1a', '#ff5b57',  '#00acac',]),

gEnter.append("path")
      .attr("d", marc)
      .attr("fill", (d, i) => {
        return color(i);
      })

The above works fine and fills the arcs with the selected colors but not the color I want per arc. The index of the array is consistent so I tried to simply re-arrange the order of the colors with no effect.

I also tried using an if statement based on the index like:

gEnter.append("path")
          .attr("d", marc)
          .attr("fill", (d, i) => {
            if (i === 0 { return color([0]) }
       })

This does fill in the segment which is index 0 but not with the selected color from the list. Changing the number in color([0]) actually produces no change at all. This is also true if I try to use a conditional based on the string of the Label instead of the index of the array.