I'm just going to say multi color :P Like BS said, cambos have flesh/peach colored bodies (says betta congress) with fins of any other color except clear (which your guy has on some parts). AKA, not cambo. He is not a bicolor either as bicolor is "The body of a bicolor must be one single color and the fins must be one single, but different color than the
He COULD be a marble, which you'll only be able to tell in time. As of now, I'd simply call him a multicolor crowntail (: He's very pretty, so don't let all the fancy talk of colorations get you down! One of my favorites of my own a "simple" multicolor, and I love that boy dearly!!