How to change default ProgressDialog circle color in android

In style.xml create style for dialog box :

<style name="AppCompatAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
<item name="colorAccent">@color/black</item>
<item name="android:textColorPrimary">@color/white</item>
<item name="android:background">@color/grey_dialog_box</item>
</style>

In this "android:textColorPrimary" need to define color you want to show and in java code define style of ProgressDialog like :

ProgressDialog progressDialog = new ProgressDialog(context,R.style.AppCompatAlertDialogStyle);

MORE : http://androidprogressdialogcustomcolor.blogspot.in/