@Luqman
I do not believe it is related to loading .kml or .kmz file. However, I would suspect more the firmware that is installed and that is not the latest one.
@Jonathan
This looks more like a white balance issue. Typical focus issues result in constant lighting in images with blur. Did you try the white balance option of iOS (in the settings of the mission)? For more information: (Android, iOS) Different colors and tones in the images.