Through some tricky manipulation of resources, you could make it appear in-game that purchasing a certain outfit placed some simple shape over a ship, but it'd only work for one ship unless you made one outfit for every ship. And you'd still have to make the shape yourself and maybe even make one for every ship if it's not in the center.
So no, you can't really do that. You could, but it'd be an extreme resource hog. I also strongly suggest you don't use the paint mechanism EVN has. With a lot of tweaking you might find colors that look natural and enhance the ships, but overall it's a lot easier to simply give different paint jobs to your own models.
Alternatively, if the ships you're trying to use EVN's paint mechanism on have their own colors (as opposed to being plain white or grey) then it's possible to change those colors through a hue adjust in a graphics editing program. Something like, Gimp, Graphic Converter, or Photoshop if you can purchase something like that. Graphic Converter is what I use and it's fairly powerful once you get the hang of it.
This post has been edited by DarthKev : 28 August 2010 - 12:08 PM