You can either make a completely black version of the normal dts or modify it to make it look more wreck-like. There's really nothing special that needs to be done.
Ok, thanks
I swear I saw a solution to this somewhere before, but after several failed attempts at finding it, I've come to ask what I have done wrong:

With shaders

Without shaders
There should be several grays and other colors that show up besides the recolorable color (wheel mounts and engine hubs). The yellow marks are self-illuminated, and the windshield is correctly transparented, so those two colors should look like that.
Also, an oddity right here:

That is the interior of the roosterpit. For some reason, the interior colors showed up on most of the required faces, but there were some weird stripes of blue (paintcan color) running through the cabin, as you can see here. There are two stripes in the picture - one just to the left of my shoulder, and another to the left of the first stripe. I have checked the material on those faces, and they are correct.