Java Android: on a white background, the switchcompat trace is not visible

I have an activity with a white background and added a switchcompat, but when the switch is not active (off), the track is invisible. What is visible is only the thumb, so for the user, it is not a switch at all. How to make the track of the switch visible when the switch is in the inactive position?

                    <android.support.v7.widget.SwitchCompat
                        android:id="@+id/someswitchname"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_alignParentRight="true"
                        android:layout_alignParentEnd="true"
                        />

resolvent:

This is done by defining a custom theme as follows:

<style name="Custom.SwitchCompat.WhiteTrack" parent="Base.Widget.AppCompat.CompoundButton.Switch">
        <!-- Inactive track color(30% transparency) -->
        <item name="android:colorForeground">[some color]</item>
    </style>

Then define a theme in your layout like this:

android:theme="@style/Custom.SwitchCompat.WhiteTrack"

Wait