I saw a pretty dramatic color shift when I first applied Colormunki to my 2013 MacBook Pro. It's been stable since, but that first adjustment surprised me. If you're not sure the calibration worked, try taking a photo of a gray card after adjusting the white balance in your camera (or later in Lightroom or Photoshop). If the gray looks gray, all's well. If not, maybe there's a problem with your Colormunki.