Veneers are the wrong color: Can they be redone?

Yes, they can be redone. The newer porcelains are more life-likeand lively. The new whites are whiter and brighter. I am assuming your veneers are older.Find a great cosmetic dentist and you will love the results.

Hi Maggi, 
If you are dissatisfied with the color of your veneers, they may be redone.  However, there are times when redoing the veneers means that additional tooth structure will inevitably be removed, in which case, you may need a full-coverage crown instead of a veneer.  Veneers will not bond well if too much tooth is removed during preparation/drilling.  I hope this helps!
Cheers, 
-Miles