There was a message thread several months ago with several suggestions for dyeing your own AirTites. The best suggestion was to use Ritz dye, but be very careful with boiling the AirTite. Others will mark the edge of a new AirTite with an indelible Sharpie to indicate the color. I too would like to find a good commercial source for the colored capsules. Good luck and let us know how it goes if you try either.