I bought some DS-2CD2387G2H-LISU/SL cameras from Empire Tech recently. I've had them installed for months with no issues. Tonight, I noticed that one of the cameras is displaying in black and white. There's plenty of low light around and it usually has great color at night. I don't know if some setting accidentally got changed, but I compared to the other cameras and all settings look similar. I tried restarting it and that didn't help. Any ideas?