UI Maps/com.mapbox.navigation.ui.maps.route.callout.model/MapboxRouteCalloutViewOptions/Builder/durationTextAppearance

durationTextAppearance

fun durationTextAppearance(@StyleRes value: Int): MapboxRouteCalloutViewOptions.Builder

to style the text appearance of route callout. Note that textColor parameter will be overridden by other parameters from MapboxRouteCalloutViewOptions