How to enable colour at night?

[Ant5246]

Had to recently reset my cameras HDR due to an issue. Prior to that, when my hikvision cameras were installed two remained colour throughout the night and it was crystal clear and would pick up registration plates. Since the reboot they’ve gone to black & white. Can anyone advise how to change this?

 

[rompik]

If it's G1 cameras then I believe this is in picture settings. You can disable automatic day/night switch and stay in day more continuously.