Well, I have a d9200 with a slight color problem in one spot. (I wouldn't necessarily call it darker, just different color) The onboard degaussing does help but I think it may be inadequate. I have purchased a manual degaussing coil to try but have not got around to doing it yet. I will let you know how it goes. I am assuming it is stubborn because it is upside down in my cocktail cab as I didn't notice anything when i first used it upright. It is a minor problem, I am the only one who notices.