How to change color in circular progress bar?

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 );