The Traxxas website doesn't even have them. It almost seems to be that they only come on the RTRs and aren't sold separately. I could be wrong but like I said I didn't see them on Traxxas website.
You could do it that way but I would suggest watching some basic painting vids on youtube. You could do something a little more complex than just a basic blue coat without a whole lot of extra effort. Do a youtube search for how to paint lexan bodies or something to that effect.
You can download a pdf parts list from the traxxas website if you don't have it, and it lists the replacement body for it. It comes with the stripes already on it, but requires you to paint the main color to finish it off. You'll also get the decals for the lights with it. Part # 3715 for vxl, $35. Hobbytown usually carries some lids, and if they don't have it they can order it.