Each camera has night vision capabilities, using a sensor to detect low light situations. When external lighting is low, the camera will switch to night mode and record in black and white. If a camera is operating in night mode when there is plenty of light, the sensor and IR illuminators are likely obstructed by the camera case.
To fix the obstructed light sensor and IRs, physically rotate the lens barrel assembly 180 degrees so the sensor and IRs are visible through the camera case.
Note: After rotating the lens barrel, the camera orientation my need to be changed in Command. See article "How to set a camera's orientation in Command"
Example of a proper and improper orientation
For more information about night vision see Do Verkada cameras have night vision?