My Dentist used white cement as my veneers came out darker than asked for. Is this okay? They appear shiny?

When the Veneers were placed on to see what color they would appear they were too dark. Instead of a transparent cement my dentist used a white cement rather than send the veneers back to the lab. I asked why the did not go back to the lab and he explained there was no difference and the lab would have just built the opaque look into the veneer? Is that okay? They appear shiny