colors keep changing

[Lugoeye]

As I recorded a beach scene, the water color was initially blue (true), but as I flew over the ocean the water turned a distinct green; this ruined the video. Does anyone know how to stop the Mavic from doing this? I even tried setting AWB to "sunny" (so it wouldn't be "automatic") but it still did the same thing: the ocean water turned an ugly green color when flying over it.

 

[Cut.Aussie]

Doesn't sound unreasonable that the apparent water colour changes.

Shallow water is generally lighter blue or blue/green and get darker as it gets deeper. Also changes colour depending on the relative position of the sun and latitude to the camera and time of day

 

[Lugoeye]

Good point, thanks. But the initial blue color is true, then the same area turns green when flying over it - and the color now is not true. It's as if the Magic changes white balance as it's changing exposure, and this is not expected or desired.