Just as a follow up, this was my solution:
<q-td slot=“body-cell-AccountIsLocked” slot-scope=“props” :props=“props” :class="(props.value==‘Locked’) ? ‘td-negative’ : ‘td-positive’">
<q-icon :class="(props.value==‘Locked’) ? ‘text-negative’ :‘text-positive’" :name="(props.value==‘Locked’) ? ‘lock’ :‘lock_open’" />
<span :class="(props.value==‘Locked’) ? ‘text-negative’ :‘text-positive’">{{props.value}}</span>
</q-td>
Thanks for all the help!..