public void setColors(int[] colors) {
            mColors = colors;
            // if colors are reset, make sure to reset the color index as well
            setColorIndex(0);
        }
Set the colors the progress spinner alternates between.

@param colors Array of integers describing the colors. Must be non-<code>null</code>.
ptr-lib/src/in/srain/cube/views/ptr/header/MaterialProgressDrawable.java