The colored ones were given out to general attendees. The pewter and silver ones were available for purchase if you wanted them. I'm hoping that a silver round may turn up as more collections come in for sale at the LCS. Since it seems most of the people that are gifted with the collections or inherit them. only what to off load them for maximum money possible. I believe that the colors were picked because it was a joint show with Canada and held in the U.S.