Probably not the way most people do it.
But we would print a solid base of orange with it a little choked back on the right side.
And then come back with a halftone green that doesn't actually stop, but goes 3 percent dot (adjust to your lowest percent dot you can hold consistent) all the way to the left.
That way you can avoid the line you would get if you were to just stop the halftones.
You could do this with discharge, or a discharge base (80% base / 20% premix white) and plastisol on top so your hand isn't super thick.