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

<gradient android:startColor="@color/background_light_grey"
          android:endColor="@color/transparent"
          android:angle="90"/>
</shape>

<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape>
            <gradient
                android:startColor="#ff2d9a59"
                android:centerColor="#ff42959a"
                android:endColor="#80000000"// add here transparent color
            />
        </shape>
    </item>
</selector>