The color showing in his wings is called opalescence. It doesn't mean that he is opaline. I don't think he's any type of pied. In the last two pictures he looks like a fallow but I can't tell if his eyes are dark red
The patchiness in his body color could be caused by feather stress.
What a pity he was allowed him to grow up with splayed legs. An experienced breeder would have fixed the problem when it first started to develop