I made some custom ass deer skins for Gen 5. One Pokedex and one C-Gear. What baffles me is the fact that making the Pokedex skin was dead simple, yet no one bothered making any tools, and GameFreak only ever released 5 custom skins over the course of Gen 5. Really fucking lazy.
Anyways, here's the download.
https://archive.org/details/faunazonskinsHow to inject these skins into your game:
>Dump your save file>Inject DLC using Pikaedit>Restore edited save file