MOFI seems to handle the data for accessory color differently than the original player. So, when the WA Player wants to use, for example, the large black rimmed glasses, it will look for file "bddfttpsz102b.wdf." However, with the same accessory data, MOFI will look for "bddfttpsz102c.wdf." The difference is in the last letter of the filename, MOFI is looking for a "c" instead of a "b." This can be solved by renaming the .wdf files.
So, in the Data\Models\Stinker\ directory of your MOFI player, rename:
note: only do this in a copy of MOFI that you use to play custom adventures on, not the original game, or it will most likely mess up when you play the original adventures.
Hope this solves your problem.
needs a 12 step program for overcoming addiction to Minecraft.