What is this color of great dane called?

i just purchased a great dane puppy from my local pet store about a month ago. Shes very pretty, but im not sure what the color is called, if it has a name. Shes silver and white with dark grey spots everywhere (almost in a brindle pattern) and has silver eyes. I know there are names for the different colors/patterns but i cant figure out what she is. I know she isnt harlequinn or blue. Also, if the dog is not an accepted color by the akc does that mean it isnt full blooded or something? I didnt plan on showing her i just dont understand why they accept some patterns and dont accept others? Any help would be appreciated :)