Does this look like B1 veneer shade? (photos)

Your two front incisors are not the same shade as your other teeth.  
3 things will control the final shade, the veneer, the tooth and the veneer cement.  Nothing is harder cosmetically as trying to make two objects glued to a tooth look just like your natural teeth.....but it usually can come close.  
I am sure your dentist will work to make you happy, make sure to ask to see the veneers on your teeth with the appropriate "Try-In" veneer cement shade before permanently cementing them on.
If they cannot improve your veneers, I would suggest visiting a dentist that makes their own veneers in-office as they will usually be able to custom shade/stain.  CEREC is one of the systems dentists like myself use to make ceramic veneers, crowns and bridges in a single appointment.