sflphone-android/res/drawable/item_generic_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_pressed="true"><shape xmlns:android="http://schemas.android.com/apk/res/android">
            <solid android:color="@color/darker_gray" />

            <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" />
        </shape></item>
    <item android:state_focused="true"><shape xmlns:android="http://schemas.android.com/apk/res/android">
            <solid android:color="@color/light" />

            <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" />
        </shape></item>
    <item><shape xmlns:android="http://schemas.android.com/apk/res/android">
            <solid android:color="@color/light" />

            <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" />
        </shape></item>

</selector>