Headscratchers / Rainbow Factory

• Do they have to use living pegasus foals to do the deed? Can't they just use ones that are already dead? For that matter, dose it have to be a Pegasus? What about a Unicorn or Earth Pony?
  • It's a Grimdark fic for the sake of grimdark. Don't think about it too much.
  • They actually explain that extracting colors while the filly is under pain and stress yields the best results.
  • They probably could use other pony races if the situation called for it, it's just that Pegasi are the easiest to get a hold of without suspicion since they're being exiled anyway.
    • Not to mention that Cloudsdale, being built on clouds, doesn't have too many Unicorns or Earth Ponies — making the rare ones "disappear" would draw attention.