Looks like 5.4.7.3 has the JSON message sending the right information now:
{["objects":{"success":true,"predictions":[{"confidence":0.7478582,"label":"person","y_min":1061,"x_min":1,"y_max":2304,"x_max":707}]},
"faces":{"success":true,"predictions":[]},
"dark":{"success":true,"predictions":[{"confidence":0.8230491,"label":"People","y_min":1047,"x_min":62,"y_max":2304,"x_max":712}]},
"openlogo":{"success":false,"error":"invalid image file"}]}
On the snapshot I am not seeing both detection labels though. JSON says label "person" at 74% and custom model "dark" label "People" at 82%, but only see the "person:74%" on the image.
Great progress!