I have just bought an S100 to upgrade my S95 in Hong Kong as they are very well priced here. This has a green tinted LCD which in comparison to my S95 is very pronounced as that has a very subtle pink tint as a lot of those do. But that pint tint is so minimal that I never new it was there until I was doing side by side comparisons with the two cameras. I took the camera back to the store and asked them to look at it, and also to compare it to shop stock. The result was interesting. The shop model in the case used as display when powered up was much more neutral than my camera. In fact I would say that it was about as green as my S95 is pink. That is to say ever so slightly not to worry about. My own new S100 however looks like it's constantly filming the Matrix movies here in Hong Kong as it is grey, cloudy and dark with glare. A lot of shots do not have that much colour because of the light. Combine that with the amazing buildings here and it makes a pretty tech style photo session complete with a futuristic movie green gel over the whole thing. Not at all visible when the photos are transferred on to the computer however.
So I have taken it to the local service agent with a complaint of a green tinted LCD and shown them all the online information on the subject and they are looking at it now. So I will see how this turns out. They were not interested in looking at any cases or examples online and would have a technician look at the camera. I suppose test it and or repair it.
Canon "Delighting You Always" - lets hope they do.