I just got a refurb 30" ACD. Nice! But it looks like the left side is darker and pinker and the right side is lighter and yellower. Is this an issue that any of you have had? I assume this isn't "normal." Would you exchange it? I thought refurbs were supposed to be checked for issues like this, although it almost looks the display was never used before (original plastic was still on the sides, etc.) I'm going to call apple but I already spent too much time with them this morning with another issue.