^^ and ^^^ ... my point exactly. 
Get John every clack, problem solved!
Hmm, well I'm pretty sure John already has every color skull ever made. I was lucky enough to get an in-depth look at his entire collection with my own eyes at KeyCon 2013. It's incredible is all I can say. I even halfway had an idea to get a ski-mask and mug him in the parking lot when he was loading up his car, just to get his greens, blues and 420's.
) But then I wouldn't be able to post any pics, so that stopped me.
But seriously, the only colors that John doesn't have I think exist only in one-of-a-kind Clacks (or single digit production runs) that are either still in CC's private stash, or that were given away to his personal RL friends in the very early days of 2009-2010, or that were sold/given away to early collectors like kisakuku.
Also, people might think I was joking about John's collection, but it's real. The only problem was John's understated midwesterness in the manner in which his Clacks were displaed. If he was from New York, he would have displayed then not in a candy bowl, but in an antique red velvet, laquered jewelry box, like this (with a LOCK):
