How can I change the style of DatePicker?

I'm trying to change my datepicker styles, but I don't know the properties.I'm using the following librarie: https://github.com/mmazzarolo/react-native-modal-datetime-picker

I’ve managed to change the colors, but I would like to change more things, such as the border radius.

I changed the styles.xml file this way:

<resources><!-- Base application theme. --><style name="AppTheme" parent="Theme.AppCompat.DayNight.NoActionBar"><!-- Customize your theme here. --><item name="android:datePickerDialogTheme">@style/Dialog.Theme</item></style><style name="Dialog.Theme" parent="Theme.AppCompat.Light.Dialog"><item name="colorAccent">#0981bf</item><item name="android:textColorPrimary">#7a7a7a</item></style></resources>

I've searching information about this, but I have not found anything....

Is it possible to change the border radius? Is there information about the items I can change?