If the lighting is dark or it is nighttime that means that the infrared night vision is on! Go into your Remo+ app, click on the Menu icon in the top left corner, click on Devices, select your RemoBell, and adjust your Night Mode setting to "Auto" or "Off."
If you are experiencing black and white video feed outside of these times, please give us a call at 888-985-1849 or email us at support@remoplus.co.