Change Snackbar style

Question

I want to override the default Snackbar style. I need to remove all margins and other stuff.

What I am current doing is:

My activity has a custom theme in my AndroidManifest.xml

<activity android:name="activity.MyActivity"
            android:screenOrientation="portrait"
            android:fitsSystemWindows="true"
            android:windowSoftInputMode="adjustResize|stateHidden"
            android:theme="@style/AppThemeLight"/>

In styles.xml I'm trying to override the snackbarStyle for this custom Theme:

<style name="AppThemeLight" parent="Theme.MaterialComponents.Light.NoActionBar">
    ....
    <item name="snackbarStyle">@style/MaterialSnackbarTheme</item>
</style>

<style name="MaterialSnackbarTheme" parent="@style/Widget.MaterialComponents.Snackbar">
     <item name="backgroundTint">#00cc77</item>
    <item name="android:background">#00cc77</item>
    <item name="cornerRadius">0dp</item>
    <item name="android:layout_margin">0dp</item>
    <item name="actionTextColorAlpha">1.0</item>
    <item name="android:layout_marginStart">0dp</item>
    <item name="android:layout_marginEnd">0dp</item>
    <item name="android:layout_marginBottom">0dp</item>
    <item name="android:layout_marginTop">0dp</item>
</style>

But none of this change seems to have effect, when showing a Snackbar, the style is always the default:

The code I used to create this example:

Snackbar.make(view, "Your message here", Snackbar.LENGTH_LONG).show()

What I am doing wrong?