Skinning ships
 

Excuse my ignorance, but I was interested to know how to reskin ships in DW. I'm a bit of a novice, but I've reskinned models in other games by taking pre separated gif or jpg files of the skins and touching them up in Photoshop. I'm building a little campagn and It would be cool if I could reskin the enemies to have a certain look.
Is there a utility I could download to accomplish this or get the skin graphics accessable so I can do this ? It's not 100% nesisary for the campagn, but it would sure be cool.