Bottom Navigation view icon change not working

I want to change to icons of the bottom navigation view as we switch items.

I have light blue icons and dark blue icons for selected items. I am using selector drawable for each navigation item but I see the images like below in grey as inactive and blue as active

Here is my code

bottom_nav_menu

    <?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:id="@+id/navigation_home"
        android:icon="@drawable/home_icon_selector"
        android:title="@string/title_home" />

    <item
        android:id="@+id/navigation_scheduler"
        android:icon="@drawable/schelduler_icon_selector"
        android:title="@string/title_scheduler" />

    <item
        android:id="@+id/navigation_favourites"
        android:icon="@drawable/favourites_icon_selector"
        android:title="@string/title_favourites" />


    <item
        android:id="@+id/navigation_settings"
        android:icon="@drawable/settings_icon_selector"
        android:title="@string/title_settings" />
</menu>

home

    <com.google.android.material.bottomnavigation.BottomNavigationView
    android:id="@+id/nav_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginStart="@dimen/margin_20"
    android:layout_marginLeft="@dimen/margin_20"
    android:layout_marginRight="@dimen/margin_20"
    android:layout_marginEnd="@dimen/margin_20"
    android:layout_marginBottom="@dimen/margin_8"
    android:background="@drawable/bottom_navigation_background"
    android:elevation="8dp"
    app:itemIconTint="@drawable/bottom_navigation_color_selector"
    app:labelVisibilityMode="unlabeled"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:menu="@menu/bottom_nav_menu" />

And selectors

scheduler selector

    <?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/qa_scheduler_inactive" android:state_checked="false"/>
    <item android:drawable="@drawable/ic_scheduler_blue" android:state_checked="true"/>
</selector>

Settings selector

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/qa_settings_inactive" android:state_checked="false"/>
    <item android:drawable="@drawable/ic_settings_blue" android:state_checked="true"/>
</selector>

Favorites selector

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/qa_favorites_inactive" android:state_checked="false"/>
    <item android:drawable="@drawable/ic_favourites_blue" android:state_checked="true"/>
</selector>

Home Selector

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/qa_home_inactive" android:state_checked="false"/>
    <item android:drawable="@drawable/ic_home" android:state_checked="true"/>
</selector>

Activity code

    val navView: BottomNavigationView = findViewById(R.id.nav_view)
    val navController = findNavController(R.id.nav_host_fragment)
    // Passing each menu ID as a set of Ids because each
    // menu should be considered as top level destinations.
    val appBarConfiguration = AppBarConfiguration(setOf(
            R.id.navigation_home, R.id.navigation_scheduler, R.id.navigation_favourites, R.id.navigation_settings))
    //  setupActionBarWithNavController(navController, appBarConfiguration)
    navView.setupWithNavController(navController)

What am I doing wrong here? Please help...

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