if you look at his tail, it has almost an orangish shade to it and also his head. so its pretty clear that he is in a shed, and will most likely lighten up once done.
There is no such thing as a blue dragon and any breeder that sells them labeled as such is either misinformed or lieing.
Some dragons do have bluish or purplish side bars but the whole body blue coloration your baby has now won't stay.