See #6
I know that their skin is a bit lighter in shade, but it is not summer now, and skin tone changes in everyone when they are not subjected to the sun. In addition, they may have avoided the sun on purpose, to become lighter skinned. If you look at the new high resolution picture of the suspect rounding the building, the proportion of his hand to his elbow is off. In the picture when he was walkin behind the other suspect the left arm was up during his stride even though he was holding the backpack on his right side. This is consistent with the obvious malformation of the left side of the person in the facebook photo.