<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <fr.castorflex.android.circularprogressbar.CircularProgressBar xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/progressBar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:indeterminate="true"
        android:visibility="invisible"
        app:cpb_color="#FFee44"
        app:cpb_max_sweep_angle="300"
        app:cpb_min_sweep_angle="10"
        app:cpb_rotation_speed="1.0"
        app:cpb_stroke_width="4dp"
        app:cpb_sweep_speed="1.0" />

    <ImageView
        android:id="@+id/headimage"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@mipmap/bubble" />
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <fr.castorflex.android.circularprogressbar.CircularProgressBar xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/progressBar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:indeterminate="true"
        android:visibility="invisible"
        app:cpb_color="@color/colorAccent"
        app:cpb_max_sweep_angle="300"
        app:cpb_min_sweep_angle="10"
        app:cpb_rotation_speed="1.0"
        app:cpb_stroke_width="4dp"
        app:cpb_sweep_speed="1.0" />

    <ImageView
        android:id="@+id/headimage"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@mipmap/bubble" />
</RelativeLayout>
Change CircularProgressBar color to colorAccent
ptch: Change CircularProgressBar color to colorAccent
