I bought a great pyrenes is it full bread or mix

[Erniesmommy]

Erie is my new doggies name hes 13 weeks old n 30 pounds.his mother was full breed white great pyrenesse who showed up at a ladys farm n had puppys then after a time left..ernie is a little goldish and has black grey mark on his lower tail n bits of black hairs on front of ears.anyway ive seen them difrent colors so im wondering if sombody can tell me if hes a mix heres a few pics . Id like to hear peoples opinions...i been reading your fourms n decided to join today..love the great pyrenese breeds personality