Night mode but not B/W

Hello there,

I have 2 cameras DS-2CD2385G1-I 8MP and one 7604NI-K1/4P(B).

I am super happy with them but don´t like B/W mode so I wanted to buy any ColorVu to try colour mode at night BUT first I have tried disabling IR and just with Day mode at Night and with a few settings to the exposure and here and there I think I can get same if not almost identical results to Colorvu at night because I have some street lightning at night enough to help to the Darkfighter. I don´t have any Colorvu...

Night mode but not B/W