I have these in the black and white and the "smoke" and white, also. I think they run a little large, I normally wear a 5.5, and the 5 fits perfectly. The only thing I notice different about the blue/green print version is that the color does not appear on the edge of the sole itself, as it does in the other two colors. On those, there is a half inch or so of the black/grey on the sole, not on the edge of the sole, but on the part where your foot sits.  If you look at the photos closely you can see this. It has the effect of making the shoe look smaller and narrower, I think. But it's a small detail, and they are all comfortable, I think, and, for Crocs, relatively dressy.