WANTED: Striped Miami Motley Hatchling.
Thanks for looking!
The snake pictured above is a pinstripe motley, no stripe gene, not even het, involved. Sometimes motley does that. Others in the clutch may have shorter segments of "stripe" or even normal motley markings.
The central stripe in a homo stripe snake, genetically stripe, will typically be wider than that of a pinstripe motley.
There are a lot of threads about it, with lots of pics, if you search.