aww what a cutie she is.
Coming from a pet store she will have some be a hybrid so a combination of Winter white and Campbells somewhere in her lines. She is closed to a Campbell colour Argente in looks though
Just a little note though - make sure you remove the fluffy bedding immediately as it's very dangerous for hammies.
Look in the healthcare section at the post at the top on dangers. It can cause bowel blockage, get tied round limbs and chock the hammie. Best bedding is ripped white loo roll.
Even if the package says it is safe believe me it is not!