I'm actually sort of surprised that nopony has compiled and posted such a simple model... So, here's a black-skinned model for everypony to use for a crowd-like scene. Or, it could also be a model to lock animations with. Each part is in a bodygroup that can be easily disabled, and is compatible with all existing pony body animations.
I take no credit for the models themselves. Model compiled off of the vn_lyra model from https://ponysfm.com/poninnahka-s-female-pony-models