Vaccination Reaction?

Today I took Paws (10 week old black lab) for her shots (the regular puppy booster shots) and she was fine at first. She was sleeping when I went to pick my daughter up from school, but when I came home I noticed that the fur around her eyes had turned from black to grey/white. So I immediately called the vet, and he said that this was not a reaction from the shot and that it was nothing to worry about. That seems odd to me, within hours of her shot, her hair changes color. Has anyone heard of this before? Am I worried for nothing?

My moms dog had a bad reaction to the rabies shot last time and had to be rushed back, she started to swell up in her mouth, tongue,drooling, panting etc Something like anapaletic ( spelling ?)shock in dogs, she is not allowed the rabie injection anymore. As for what happen to your dog I never heard of it my vet normally just tells me they could be a little sleepy the next day, with Tucker my border collie pup this never happened.LOL