It would be wonderful if there is a way to use mapbox custom map styles here!
Hi there. @Jun_Kwon and welcome to the Community 
Thanks for sharing your idea! Could you please specify the widget, where you’d like to add the mapbox custom map? Is it the Store Locator or Google Maps?
Thanks Max.
I would like to see the custom mapbox map style option for Store Locator!
Got it, thanks!
We’ll have this idea in mind and see if it gets traction with other users 