u/mac090909

Searched but didnt find this..

Longshot but in gear 5 luffy is white, but the sun appears yellow. Luffy isnt illustrated wearing the hat in gear 5.

The straw hat is a yellow round circle.

I predict a future panel with Luffy losing in gear 5 and Shanks shouting put on the hat.

Also with objects having fruits recently, the hat probably does something.. like complete the transformation.