[HarryT]

In the lighting conditions in which I do use it (low brightness at night, medium in the daytime, light off in full sunlight), I don't see "awful rainbow colours". What someone else might see in different circumstances is of no concern whatsoever to me. Nobody would ever use a Voyage at night with the screen on maximum brightness, so why on Earth does it matter what it looks like in such situations? If you actively go around looking for problems of course you're going to find them!