RouteStyleDescriptor

fun RouteStyleDescriptor(    routeIdentifier: String,     @ColorInt lineColor: Int,     @ColorInt lineCasingColor: Int)

Parameters

routeIdentifier

a string that identifies routes which should have their color overridden

lineColor

the color of the route line

lineCasingColor

the color of the shield line which appears below the route line and is normally wider providing a visual border for the route line.