Here's an update for Dwarf Fortress v0.47.04:
https://www.mediafire.com/file/40qnvhz77fsazl1/MLP-FIM_0.47.04_1.1.zip/fileIt's in reduced-raw format used by Lazy Newb Pack graphics packs, so instead of replacing your /raw/objects/ folder with the version from the mod, you copy the modded files into the vanilla files.
Also, you can use a Lazy Newb Pack to install this. Just place it into the /LNP/mods/ or /LNP/graphics/ folder. You don't get the MLP graphics if you place it into the mods folder, but you don't get the LNP mod protections if you place it into the graphics folder. Imo, I would make a duplicate copy of the LNP and put this in the graphics folder. That way your vanilla saves don't get corrupted with FIM mod files, and you get the graphics, and you can have all your FIM saves together and separate from your vanilla saves.
It's supposed to do this automatically, but it must be kind of glitchy right now in alpha. So you might enter this into the DFHack window after loading your game:
twbt unit_transparency 1
Also there's graphics for the six that you can use for adventure mode. To chose your character on a per-save basis, after creating the world, open your /Dwarf Fortress/data/saves/regionx/raw/ folder. Then drag the "graphics_QS_ST_MJR_pony_adventurer" from the "choose your adventurer" subfolder of your choice into that save folder's "/raw/graphics/" folder, overwriting the original.
edit: updated link with v1.1