Colorvu changing colour

I took the plunge with a cheap colorvu camera to see just what I could do at night and was very impressed with its low light performance. I have the DS-2CE10DFT-F. I wanted to try this out on my analogue box before upgrading to IP, although I now see that the the IP colorvu range goes to 4MP only and I’d like a 5MP if possible but that’s a query for another day.
The issue I’m having is the camera seems to be switching randomly it’s ‘interpretation’ of what it’s seeing, switching between a...

Colorvu changing colour