If you don't use the lites, you "move up" a plan. So if you're on gold, which I have been told by my COD starts at 181, you would be on purple if you aren't doing the lites. I am on purple w/lites. If I didn't do the lites, at my weight, I would be on red. I was told by my COD that 224-181 was purple and 180 and down was gold, and that if there was a problem getting off those last few pounds at the bottom of gold, they would put me on green. (Please, God, no green!). I'm not sure what the top range of red is, but I know red1 is after red. I don't know what the red1 exchanges are, either. But this has been much more than you asked, right? I just figured you weren't the only one with that question.