Hi Helen,
What version of Workflow Manager are you using? The Workflow Manager viewer will render the LOI map service as it is published. To get the polygons to show up in the color that you want, you will need to create a new map (MXD), import the JTX_JOBS_AOI/POI layers into your map, edit the symbology and republish the map service.
Thanks,
Lalaine
Workflow Manager Team