I have a pullet with similar coloring, but I don't know what it's called. Someone breeds bantam Cochins with similar colors and she calls them confetti or calico, but the pattern on them is more even. I always thought splash went with the blue-black-splash genetic combo? Kind of a real pale gray with darker gray marks? I know very little about this.
It will be interesting to see what color his saddle and sickle feathers will be. He's going to be a stunner! Keep handling him and give treats and he'll tame down real nice. They are such sweet birds!