I have a Philips 3000 series 32pfl3506 tv. I just bought it yesterday and everything seemed great.. I have been playing games on it for a good portion of the day today. I noticed when grey colors come up I see barely visible tiny lines going through the grey.. Or dark colors.. It does this on some other colors too but it's barely visible. Is this a problem? Should I be worried about this or is it just normal. I would really appreciate some feedback. Thanks!