Having an issue with using wallpapers from the Gallery. When wanting to load a wallpaper, the image comes up for preview, filling the screen, but with blue grid lines that limit the size of the image as it's going to be displayed. The grid lines can be stretched a bit, but it still doesn't cover the entire image. This forces only a portion of the image to be used, usually in pretty poor resolution. How would one get rid of the blue grid, or simply get the Nex7 to accept an image in its full size?