I looked at your posting history and saw that you planted three mauve roses in February, which seems like the right time if the egg is still whole. They were Angel Face, Nicole Carole Miller, and Ebb Tide. This looks like Angel Face to me. Nicole Carole Miller's a little lighter and Ebb Tide is darker.
The first bloom on a rose can be misleading, however, so it could be any of those three. I remember when I bought Rainbow Sorbet because I was delighted with all of the colors it had in a single bloom.
Rose (Rosa 'Rainbow Sorbet')
The first bloom on my rose was solid white and I was certain that the rose had been mislabeled, but all of the subsequent blooms were unmistakably Rainbow Sorbet.
