For API 21 and Higher. Simply set the indeterminateTint property. Like:
android:indeterminateTint="@android:color/holo_orange_dark"
To support pre-API 21 devices:
mProgressSpin.getIndeterminateDrawable()
.setColorFilter(ContextCompat.getColor(this, R.color.colorPrimary), PorterDuff.Mode.SRC_IN );