Dark orange continuously recording, not motion detection..?

Hi,
i have the tapo c100 camera. I use a micro sd card and have subscribed to the cloud storage. I have my recording schedule set on continuously record for some hours of the day (shows up as a blue bar) and motion detection for the rest of the day (shows up as a bright orange bar if something has been detected) and sends an alert on my phone. I have noticed a green bar showing up- this is for when a person has been detected and it sends an alert to my phone. All of these get saved on my cloud & sd card- apart from the continuously record which i can only preview on the sd card.
however, i have noticed that on very rare occasions a darker orange bar appears and continually appears for a few hours even though nothing is saved or my phone is not alerted. It is not motion detection as nothing has been detected and if it was that appears as a bright orange bar, sends a notification to my phone but then changes back to the dark orange bar until it randomly stops. I wanted to know what the issue was here. I have attached an image to explain what i mean. Thanks
