At the National, Topps released the mini set. Along with the base card, there were a couple parallels. Today I've got the pink mini.
This is card #21 for my Barney rainbow. Back in July I somehow missed an orange factory set version, and so far that's the only one that has been on Ebay. The orange and clear version from series one are the only others that I'm after (unless there is a parallel with the update set).
Here are the 21 cards that I've got: