color faulty

Installed system all way good but now Having issues at night time with the colour vue cameras they keep cutting out going all pixely flickering only at nighttime and have a strange line at the top of the image on all cameras even during daytime can anyone help or knows what’s wrong...

Hey guys good to see you around.. I have recently bought two IPCs branded Provision (I1-340IP5S36) 4MP I need your help with colors are not correct, it's nearly yellow in night and it's dark in daytime picture itself is amazing and full hd i am using 48v poe injector i have the camera reset to...