RouteLineResources routeDefaultColor not working

Android version: 33
Navigation SDK version: 2.14.2

Steps to trigger behaviour

Change colours in the routeLineResources:

private val routeLineResources: RouteLineResources by lazy {
    val grayColorWithAlpha = Color.argb(178, 128, 128, 128)
    RouteLineResources.Builder()
        .routeLineColorResources(
            RouteLineColorResources.Builder()
                .routeLowCongestionColor(Color.YELLOW)
                .routeCasingColor(Color.RED)
                .routeDefaultColor(Color.CYAN)
                .routeLowCongestionColor(Color.GREEN)
                .routeClosureColor(Color.BLUE)
                .routeLineTraveledColor(grayColorWithAlpha)
                .routeLineTraveledCasingColor(Color.TRANSPARENT)
                .build()
        )
        .build()
}

Expected behavior

The routeDefaultColor color should change according to the specified color values in the RouteLineResources.

Actual behavior

The line color set by routeDefaultColor remains unchanged. All other colours change. See screenshot below.

Start by tracing RouteLineResources and RouteLineColorResources.Builder, focusing on how routeDefaultColor is consumed. Reproduce the issue with Android 33 and Navigation SDK 2.14.2; done when the default route line uses the specified color while the other configured colors continue to work.