I realy don't think you would want to even try to make a "colony" of centipedes. Even if you did have baby centipedes you would have to remove the babies(very very very tiny. Just big enough to eat maybe a pinhead cricket) from the adults and raise them in seperate containers for several months to maybe over ayear. Millipedes secrete a toxin (that is the bad smell they let off) when threatned and this owul probably be refused then. It may be dangerous to the snake, I don't know. I would suggest either catching your own fire, and stone cntipedes and feeding the snake or find an alternative food source. CEntipedes do have venom. There first set of legs right after their head have evolved over millions of years to become fanglike. It is not the tail that does the envemonating. The venom is pretty strong and some of the larger centipedes such as vietnamese centipedes (scolopendra subspinipes) or other may reach lengths over 9". The record for a centipede is said to have been like 13" for a peruvian giant centipede. I have a vietnamese. But back to the venom, it is not deadly, although there was one death from a vietnamese centipede. They cause EXTREME pain. Morphine does not help. I have heard that from more than one person. I have not been bit by any from the Scolopendra comlex but I have been bit by fire and stone centipedes and they hurt pretty bad. Maybe liek a hornet or something of that. I still can't imagine a snake eating centipedes. I am into the arachnids and myriopods big time so that is why I know what I am talking about. Centipedes are probably the best escape artists on earth for any size that they are, whether 1" or 10". Are you sure they cannot get out. Absolutely sure. Or is there a snkae well known for eating cntipedes? I don' know too much about the small terrestrial snakes so....
-----
Justin