Occasionally my reverse camera will either a) have a very blue tinge to it but still work or b) start with a blue tinge and then stutter profusely with lines across the screen and then eventually cut out and put it back on the rear sensor page & not go back on to the cam. Anyone had any issues like this & know of a fix? Cheers 

On the Superb this would be an aftermarket camera unless you fitted the High line from another VAG model.

Check the connectors behind the radio and then in the boot.

Thanks mate 👍 @26DIPP