Andriod button wont change color

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <stroke android:width="0.5dp"
        android:color="#ff000000"/>

    <padding android:left="1dp"
        android:top="1dp"
        android:right="1dp"
        android:bottom="1dp"/>

    <size android:width="83dp"
        android:height="196dp"
        />

    <corners android:radius="50dp"/>

</shape>

Xml button color not changing

<androidx.appcompat.widget.AppCompatButton

Source: stackoverflow.com

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