I'm confused. What does "Brighter" mean? Would this be too bright? I do a lot of color proofing and although I don't expect exact color from the display, "30% brighter" would not necessarily be a good thing for me. So, what does it mean? Is it literally 30% brighter than..... what? The 20" iMac? My old CRT monitor? Can I make it not brighter at all?