From what I understand, the Okeetee thing isn't a gene, but a line bred trait that widens the borders. Unless of course your snake is from the local that the Okeetee snakes came from originally.
That said, I don't think that once a snake is hybridized (creamsicles are hybrids as far as I know), that it would be covered under that local. And since the borders don't look any wider than normal. I would stick with just calling it a creamsicle.