I noticed in my friends list that some friends will list as 0 lbs lost, but if I click on their profile it will say they've lost (for example) "15.2 lbs" in black. Others in the list will show as losing (for example) "8.2 lbs" on the list and if I click their profile it says they've lost "8.2 lbs" in green. Why is that? What is the difference between the green and black weights lost? Just curious really.