Camera not switching from b&w to color in daytime

I recently purchased the 8 channel NVR kit on Amazon with 2 dome and 2 bullet camera and got it all installed. I'm having an issue with one of the cameras not switching from b&w to color in the daytime. If I unplug the cable to that channel and plug it back it, it goes to color but I don't really feel like doing that every day.
Any idea if it's the camera or the NVR messing up?

Hi Kim Ragone,

Sorry for the problem. Would you please tell me what camera model has the problem?
Please leave us your Amazon order ID and we will replace one new camera to you. Thanks.

It is one of the RLC-420's that has the problem. My order ID is 113-2308982-6349868.

Hi Kim,

Thank you very much for your order information. We have arranged a new replacement to you. Tracking No. will be updated tomorrow when Amazon sent it out. You may get the replacement soon. Thanks.