Conditional Styling and Binding

<td>
  <span 
    *ngIf="eachOutlet.dollarValue != 0"
    [style.color]="eachOutlet.dollarValue < 0 ? 'red' : null">
      {{eachOutlet.dollarValue | number:'1.0-2'}}
  </span>
</td>

You can also create a directive that does the styling (except the number pipe) to make it easier to reuse over different elements.

Plunker example