xxxxxxxxxx
<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>
xxxxxxxxxx
//Add this to your button xml element
android:background="@android:color/[INSERT_COLOR]"
//You might have to change the text color to make the text readable
//Change this line in both of the themes.xml files
<style name="Theme.[INSERT_APP_NAME]" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
//to
<style name="Theme.[INSERT_APP_NAME]" parent="Theme.AppCompat.DayNight.NoActionBar">
// you can change the .NoActionBar to light action bar or dark action bar if you want to