It could have been a me problem, and i could have not been paying too much attention but i think its the fact the the pink donut contrast seems less noticeable than the lighter color donut but i think the main thing is that the hole on the light donut is more closed like its on an angle and pink donut has almost a perfect circle hole which made me think u could go 360 i guess. Could also be the fact that from a first glance, it looks like the donut has 3 colors and not a "tunnel" in the darker area. Still loved the game :D