Really? That's wonderful! We still don't know everything about Dwayne, but I think this color really suits him. And, not only because of the banana part, obviously, but it's just a nice bonus, in my opinion.
As for the name of the protagonist, well, it's still just a thought. That would be quite nice, yes, but if it's too much of a hassle while working on a novel, no one will be too upset if this option isn't there, heh... I hope.
I still think white fits anyway
All colors are in one, and everyone sees something of their own in the main character, while he himself remains, well, himself anyway.