GMAndroid/app/src/main/res/drawable/button.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >

    <stroke
        android:width="3dp"
        android:color="@color/input_border" />
    <solid android:color="@color/input_button_background" />
    <corners android:bottomRightRadius="7dp" android:bottomLeftRadius="7dp"
        android:topLeftRadius="7dp" android:topRightRadius="7dp"/>
    <padding android:left="5dp"
        android:top="5dp"
        android:right="5dp"
        android:bottom="5dp" />

</shape>