AArkiwi/res/layout/bg_player_header.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">   
  <gradient
      android:startColor="#484c4f"
      android:centerColor="#3c4044"
      android:endColor="#2e3136"
      android:angle="270" />
</shape>