For those who have retina display MBPs how does wallpaper smaller then retina size look?? Currently I have a cMBP with hi-res antiglare display. When I go to wallpaper sites like Interfacelift or Wallpaperswide it highlights my current resolution (1680x1050) but I always choose the highest resolution of the pic I want. Even if it's as big as 5120x3200. That way the pic is always sharp. But what about those who use retina displays and have wallpaper less then 2880x1800?? How does the wallpaper look?