I speak as the proud owner of such a candy-cane paint scheme.
I prefer #2.
It provides an "arrow-go-fast-while-standing-still" look without adding a lot of weight to the bottom of the bike.
A decal may or not be required to break up the expanse of silver under the bike (or pursue option #4 as a second choice). I note you have used decals in the past to add flavor.
In my view, the expanse of silver in #2 complements the tail section above.
All the others risk taking the candy-cane look to the extreme, IMHO.
Notwithstanding the approaching season and its appropriateness thereto.
If it were mine, I'd start with #2 and progress to #4 if I thought it was absolutely required. Based on what I see, #2 gets the nod.
As you were, gentlemen.
Ian