A custom LEGO velociraptor
In my understanding of the question, you want to take an existing LEGO velociraptor and repaint it, but you are afraid that doing a custom paint job will rub off quickly.

There is no easy solution for this, but here are a few tips:


You could send an email to the guys at minifigs.me and see if they would be willing to help you with this, either as a one-off job (but it will cost you) or as an offering they wish to add to their collection. Their contact form is [here].(http://minifigs.me/make-me-a-minifig/contact/)
You could try and do this yourself. Removing the existing print from
a raptor fig should be relatively easy (this article at
Eurobricks
recommends Brasso and a paper towel/rag/cotton ball) even though
that is very mildly abrasive and hence might leave some minor
scratches. Brickjournal ran a series
of articles back in 2008 about minifig customization - I found this
online
copy that explains how to give LEGO pieces a new paint color - they
recommend acrylic paint. I also found this link describing how to prime &amp; paint LEGO minifigures. They recommend priming and sealing on top of an acrylic paint job.
To get the finer details, consider using a Sharpie pen.


Net - Customizing your velociraptor is definitely possible, but there is no "ready-to-go" customization service for this yet. Doing it yourself can be done, but it is not easy nor quick to do this, especially not if you're doing it the first time. Definitely not a job for kids.