Not sure if it was made public information, but they won't be available to us painters anymore, as megabass has put a patent in on that bait design. I am selfishly hoarding all the ones I have previously purchased for that reason ;P
Brushed on! After i get an initial coat of epoxy on I put a bunch of glitter in the same cup with the same batch of clear coat then slathered it across the top of the bait!