Aside from the giveaways, were the other colors all produced in the same quantity?
The quantities ranged from 1 of a kind to about 27 of a kind. There were different totals for each colorway. Most of the colorways ended up somewhere in the range of 6 to 12.
So far it seems those general numbers strike a good balance between (a) each keycap having its own non-mass-produced individuality and personality and (b) there still being sufficient quantity to let multiple people get their favorite kind (via trading or the direct sale).