How to make text color as transparent in listview android?

I need to change Text color based on background image. My background image contains multiple colors. So, accordingly i have to change my textview color.

  <TextView    android:id="@+id/txtbloops_flower"
               android:layout_height="wrap_content"
               android:layout_width="wrap_content"
               android:textSize="16dp"
               android:layout_centerInParent="true"
               android:layout_marginLeft="10dp"
               android:textColor="#ffffff"/>

please guide me, how to do this.