I would actually say it's pretty cool to have a calico Mutant Draqua. Sure it doesn't have a picture, but it could be one of the only ones on Res because the chances of someone getting another before the glitch is corrected are slim or will only happen a few more times.
Despite these pets not having images (you can always use your imagination, right? ;3), they're really cool, and people would buy them for a lot of money. Just like the G&S glitch to make non-CS pets be the G&S Dye Kit colour.
If you really, really don't want it to be Calico, you can always use a Dye Kit on it so it will have an image, but in my opinion it'd be way cooler to keep as is. :3