That is the thing ... it is not a whole new morph. Sunkissed Butters already exist (in the U.S. and overseas).
Even if this is the first Stripe, of this morph, it is, still, not a new morph ... it is an existing Morph that happens to have a specific pattern (via a known pattern gene).
Here in the U.S., at least, a Morph's name is not changed just because it has a different pattern (different than a normal pattern)... not sure that it is any different elsewhere.
Whatever though ... a myriad, of confusion, already exists ... what's one more?<rhetorical>