You can display the marker of a distinctive image according to each status of item.
Please move to Dashboard >> Items >> Categories. Then you can set up a marker while creating a status in this place.
If it is the case of the status which is already made, you may set up a marker by clicking the edit button.
When you set up a marker and refresh the map, the changed marker images will appear on your map.
Regarding the information about the map-refreshing, you may refer to the following link.