hello guys I just bought a panasonic 50pv500 which was installed last Saturday. I am noticing color changes while viewing and it does not matter what I watch, cable, satellite, dvd. I have visited the threads about the contrast problem here, they are great, but they do not give a solution. one thread says it is a fault and the unit needs to be changed and another thread says it is a known issue with panasonic and can be solved with good tuning. If so what pray tell are those setting that will make this contrast change go away? any help will be appreciated, this is giving me headaches.