Ugh, I'm aware that the screen color gamut of the XL is warmer than that of the original 3DS, but I ran into the *same* problem I had with with my original 3DS where the *upper* screen is a degree or two warmer than the lower screen. It's not bad until you run a game or an app that combines the two screen into one big vertical display (some DS games, Activity log, browser -- check GAF's mobile site for example). Then when you start scrolling the same white background between the two displays, it becomes noticeable and kinda distracting. I know for a fact it didn't happen to *all* original 3DS, as I've checked them first hand, so if there are XL devices that don't share the problem, I'm gonna take mine back because I'm *sick* of it.
Can anyone check their XLs?