Hey foestar!
I actually hadn't thought of making a monster pack. If I made one but just with front-facing frames (like in Wolfenstein 3D), would that be something you'd be interested in?
Apologies, but I do not have a shareable palette. It's likely no big deal, you can use whatever colour selection you desire and then place the texture beside the ones in the pack, and you'll see immediately if it's an appropriate fit or not. You could also reduce the amount of colours in say, Photoshop, and go from there.