stressbaby

Hi, Can anyone help? I've just purchased a SUNLUXY Home 4CH CCTV DVR and am having problems with the colour balance. When I connect my dome camera (420tvl) I find that the reds show as blue under certain lighting conditions (indoor halogen). The settings on the DVR are pretty basic, can anyone suggest why this is so and whether there are any 'hidden' RGB settings? Many thanks Darren