app:animCircleLoadingView_textColor doesn't work

[franyack]

Hi, first of all thank you for this fantastic view!
I'm trying to use this in my app, but when I change the attribute app:animCircleLoadingView_textColor to another color (white is by default) nothing happens. When I run the app, the text color always is white.
My code:

<com.github.jlmd.animatedcircleloadingview.AnimatedCircleLoadingView 
        xmlns:app="http://schemas.android.com/apk/lib-auto"
        android:id="@+id/circle_loading_view"
        android:layout_width="250dp"
        android:layout_height="250dp"
        android:layout_below="@+id/workingTexto"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="74dp"
        android:background="@color/colorPrimary"
        app:animCircleLoadingView_mainColor="@color/colorPrimary"
        app:animCircleLoadingView_secondaryColor="@color/colorPrimaryDark"
        app:animCircleLoadingView_textColor="@android:color/black" />

Can you help me?
Thanks!