Absolutely nothing. Except it's shaded in the same way. Well when I say shaded, it's not shaded, but it still looks good. I'm getting almost like a T-shirt design vibe to it, it has that sort of style.
It might also have to do with the size of the image. I noticed that when I upload bigger images ( eg, scans at 300dpi, they break more quickly. I think the only solution for it now is clicking Download image (which isn't always possible).