Its a weird one. My 17 Inch Mac Book pro has been working great for the last 2 years. Only recently the screen colour changes slightly when opening some apps. The apps vary, maybe AppZapper. Chrome. Indesign. Once that app is closed the colour goes back to normal again. It would go from the normal "brown-white" look to a "blue" hue. The best way to describe it would be if you went to the Display and change the colour profile to a different display. That would be what happens to the screen. Once I run CC cleaner and or Onyx it all goes back to normal again on these apps. Then for no reason the blue would appear when an app opens. I have checked and ColorSync Utility and it doesn't show any errors. I am running ML. What is causing this? Hardware or software? How do I fix it?