<div layout="row" layout-align="space-between">
  <p>The number is</p>
  <font color="{{((msg.payload || 0) % 2 === 0) ? 'green' : 'red'}}">
    {{(msg.payload || 0) % 2 === 0 ? 'even' : 'odd'}}
  </font>
</div>