I really dont think it is. There was another thread on this but Im not sure if it got lost in the shuffle.
I called every single Saks in the country I joke you not, and either they had sold out already or only received the pink pink ones. I think that what happened is of course its only mho, but I think that the missing shipments of trot on went back to mac and they didnt have enough of the pink pinks since they actually made it to mac...
Trot on still says its available and its been sold out for a while now, so it really could be anything.