I just tried taking my arrow( computer illiterate and mostly self-taught, don't know correct terms for things) with my mouse to the edge of the gray and moved it inward, and the color disappears and all I see is the white. It shrinks the width of the extra around the page.
I read somewhere else that they had toned down the white some. I do believe it was a lot whiter before. Maybe more kinks to clear up...